File:
[LON-CAPA] /
doc /
gutshtml /
SessionTw2.html
Revision
1.2:
download - view:
text,
annotated -
select for diffs
Tue Jul 22 14:47:00 2003 UTC (20 years, 9 months ago) by
bowersj2
Branches:
MAIN
CVS tags:
version_2_9_X,
version_2_9_99_0,
version_2_9_1,
version_2_9_0,
version_2_8_X,
version_2_8_99_1,
version_2_8_99_0,
version_2_8_2,
version_2_8_1,
version_2_8_0,
version_2_7_X,
version_2_7_99_1,
version_2_7_99_0,
version_2_7_1,
version_2_7_0,
version_2_6_X,
version_2_6_99_1,
version_2_6_99_0,
version_2_6_3,
version_2_6_2,
version_2_6_1,
version_2_6_0,
version_2_5_X,
version_2_5_99_1,
version_2_5_99_0,
version_2_5_2,
version_2_5_1,
version_2_5_0,
version_2_4_X,
version_2_4_99_0,
version_2_4_2,
version_2_4_1,
version_2_4_0,
version_2_3_X,
version_2_3_99_0,
version_2_3_2,
version_2_3_1,
version_2_3_0,
version_2_2_X,
version_2_2_99_1,
version_2_2_99_0,
version_2_2_2,
version_2_2_1,
version_2_2_0,
version_2_1_X,
version_2_1_99_3,
version_2_1_99_2,
version_2_1_99_1,
version_2_1_99_0,
version_2_1_3,
version_2_1_2,
version_2_1_1,
version_2_1_0,
version_2_12_X,
version_2_11_X,
version_2_11_4_uiuc,
version_2_11_4_msu,
version_2_11_4,
version_2_11_3_uiuc,
version_2_11_3_msu,
version_2_11_3,
version_2_11_2_uiuc,
version_2_11_2_msu,
version_2_11_2_educog,
version_2_11_2,
version_2_11_1,
version_2_11_0_RC3,
version_2_11_0_RC2,
version_2_11_0_RC1,
version_2_11_0,
version_2_10_X,
version_2_10_1,
version_2_10_0_RC2,
version_2_10_0_RC1,
version_2_10_0,
version_2_0_X,
version_2_0_99_1,
version_2_0_2,
version_2_0_1,
version_2_0_0,
version_1_99_3,
version_1_99_2,
version_1_99_1_tmcc,
version_1_99_1,
version_1_99_0_tmcc,
version_1_99_0,
version_1_3_X,
version_1_3_3,
version_1_3_2,
version_1_3_1,
version_1_3_0,
version_1_2_X,
version_1_2_99_1,
version_1_2_99_0,
version_1_2_1,
version_1_2_0,
version_1_1_X,
version_1_1_99_5,
version_1_1_99_4,
version_1_1_99_3,
version_1_1_99_2,
version_1_1_99_1,
version_1_1_99_0,
version_1_1_3,
version_1_1_2,
version_1_1_1,
version_1_1_0,
version_1_0_99_3,
version_1_0_99_2,
version_1_0_99_1,
version_1_0_99,
version_1_0_3,
version_1_0_2,
version_1_0_1,
version_1_0_0,
version_0_99_5,
version_0_99_4,
loncapaMITrelate_1,
language_hyphenation_merge,
language_hyphenation,
bz6209-base,
bz6209,
HEAD,
GCI_3,
GCI_2,
GCI_1,
BZ4492-merge,
BZ4492-feature_horizontal_radioresponse,
BZ4492-feature_Support_horizontal_radioresponse,
BZ4492-Support_horizontal_radioresponse
Convert GUTs HTML to PROPER line endings.
1: <html>
2:
3: <head>
4:
5: <meta name=Title content="Session Two: Statistics/Chart (Behrouz)">
6:
7: <meta http-equiv=Content-Type content="text/html; charset=macintosh">
8:
9: <link rel=Edit-Time-Data href="Session%20Tw2_files/editdata.mso">
10:
11: <link rel=OLE-Object-Data href="Session%20Tw2_files/oledata.mso">
12:
13: <title>Session Two: Statistics/Chart (Behrouz)</title>
14:
15: <style><!--
16:
17: .MsoFootnoteText
18:
19: {font-size:10.0pt;
20:
21: font-family:"Times New Roman";}
22:
23: .MsoHeader
24:
25: {tab-stops:center 3.0in right 6.0in;
26:
27: font-size:10.0pt;
28:
29: font-family:"Times New Roman";}
30:
31: .MsoFootnoteReference
32:
33: {vertical-align:super;}
34:
35: .MsoBodyText
36:
37: {line-height:24.0pt;
38:
39: font-size:12.0pt;
40:
41: font-family:"Times New Roman";
42:
43: layout-grid-mode:line;}
44:
45: .MsoBodyTextIndent
46:
47: {text-indent:-.5in;
48:
49: font-size:10.0pt;
50:
51: font-family:"Times New Roman";}
52:
53: .MsoBodyText2
54:
55: {font-size:10.0pt;
56:
57: font-family:"Times New Roman";
58:
59: color:black;}
60:
61: .MsoBodyTextIndent2
62:
63: {text-align:justify;
64:
65: line-height:150%;
66:
67: font-size:11.0pt;
68:
69: font-family:"Times New Roman";}
70:
71: .MsoHyperlink
72:
73: {color:blue;
74:
75: text-decoration:underline;
76:
77: text-underline:single;}
78:
79: .H5
80:
81: {font-size:10.0pt;
82:
83: font-family:"Times New Roman";
84:
85: layout-grid-mode:line;
86:
87: font-weight:bold;}
88:
89: .FirstParagraph
90:
91: {text-align:justify;
92:
93: font-size:10.0pt;
94:
95: font-family:"Times New Roman";}
96:
97: .Section1
98:
99: {page:Section1;}
100:
101: .Section2
102:
103: {page:Section2;}
104:
105: -->
106:
107: </style>
108:
109: </head>
110:
111: <body bgcolor=#FFFFFF link=blue vlink=purple class="Normal" lang=EN-US><div class=Section1>
112:
113: <h2>Session Two: Statistics/Chart (Behrouz)</h2>
114:
115: <p><span style='layout-grid-mode:line'>In LON-CAPA, we are involved with two kinds
116:
117: of large data sets: </span></p>
118:
119: <p> <span style='layout-grid-mode:line'>1)<span
120:
121: style='font:7.0pt "Times New Roman"'> </span></span> <span
122:
123: style='layout-grid-mode:line'>Educational resources such as </span>web pages,
124:
125: demonstrations, simulations, and individualized problems designed for use on
126:
127: homework assignments, quizzes, and examinations<span style='layout-grid-mode:
128:
129: line'>; </span></p>
130:
131: <p> <span style='layout-grid-mode:line'>2)<span
132:
133: style='font:7.0pt "Times New Roman"'> </span></span> <span
134:
135: style='layout-grid-mode:line'>Information about users who create, modify, assess,
136:
137: or use these resources. </span></p>
138:
139: <p><span style='layout-grid-mode:line'>Usually, instructors/ course coordinators
140:
141: wish to assess the studentsÕ educational situation or evaluate the problems
142:
143: have bee presented in the course, after the students used the educational materials.
144:
145: There are two main modules in LON_CAPA that provide the statistical information
146:
147: for instructors/ course-coordinators: <i>lonchart.pm </i></span><span style='layout-grid-mode:line'>and
148:
149: <i>lonstatistics.pm</i></span><span
150:
151: style='layout-grid-mode:line'>. When an instructorÕs access is authorized, he/she
152:
153: can find useful reports about the course, regarding maps, problems included
154:
155: in each map, and the students who tried to solve the problems. When an instructor
156:
157: selects a course, he/she has two buttons in remote control to obtain the statistical
158:
159: information: Ò<i>chart</i></span><span style='layout-grid-mode:
160:
161: line'>Ó or Ò<i>stat</i></span><span style='layout-grid-mode:line'>Ó button.</span></p>
162:
163: <h3 style='line-height:150%'><a name="_Toc421867139"><span style='layout-grid-mode:
164:
165: line'>lonchart.pm</span></a></h3>
166:
167: <p><span style='font-size:11.0pt;layout-grid-mode:line'>Ò<i>chart</i></span><span
168:
169: style='font-size:11.0pt;layout-grid-mode:line'>Ó button in remote control calls
170:
171: lonchart.pm, which provides a quick review of students tries on different problems
172:
173: of a course for an instructor. The instructor may monitor the number of
174:
175: tries of every student in each map and its problems.<span style='color:red'>
176:
177: </span>The number of solved problems in a map is shown in the end of each map
178:
179: with a different color (green). The overall solved problems and total number
180:
181: of problems in the map can be seen at the end of line according to every individual
182:
183: student in a different color (blue). A sample of chart is shown in <b>Fig. 3.2.1</b></span></p>
184:
185: <p><span style='font-size:9.0pt;border:solid windowtext .5pt;
186:
187: padding:0in'>xxxxxxx1:msu ! 001 ! 1*11*121 <span style='color:green'>8</span>
188:
189: 1231.31423212 <span style='color:green'>12 </span> 2111211284.131 <span style='color:green'>13</span>
190:
191: É 231113112221 <span style='color:green'>12</span> <span style='color:navy'>162
192:
193: / 188<br>
194:
195: </span>xxxxxxx2:msu ! 003 ! 12113162 <span style='color:green'>8</span> 1+11
196:
197: 1 21x111<span style='color:green'>10</span> 11211322246132 <span
198:
199: style='color:green'>14</span> É ############<span style='color:green'> 0
200:
201: </span><span
202:
203: style='color:navy'>149 / 188</span><span style='color:green'> <br>
204:
205: <br>
206:
207: </span></span></p>
208:
209: <div style='border:solid windowtext .5pt;padding:1.0pt 0in 1.0pt 1.0pt'>
210:
211: <p style='border:none;padding:0in;'>1..9: correct by student in 1..9 tries </p>
212:
213: <p style='border:none;padding:0in;'>*: correct by student in more than 9 tries
214:
215: </p>
216:
217: <p style='border:none;padding:0in;'>+: correct by override </p>
218:
219: <p style='border:none;padding:0in;'>-: incorrect by override </p>
220:
221: <p style='border:none;padding:0in;'>.: incorrect attempted </p>
222:
223: <p style='border:none;padding:0in;'>#: ungraded attempted </p>
224:
225: <p style='border:none;padding:0in;'>Ô Ô: not attempted </p>
226:
227: <p style='border:none;padding:0in;'>x: excused</p>
228:
229: </div>
230:
231: <p><span style='font-size:14.0pt'><b>Fig. 3.2.1</b></span><span
232:
233: style='font-size:14.0pt'> Chart of map, problems, and studentsÕ tries, and a quick
234:
235: statistics of solved problems</span></p>
236:
237: <p><span style='layout-grid-mode:line'>1. When an instructor loads the chart in
238:
239: his/her machine once, its data is cached in his/her local machine. If he/she
240:
241: runs the chart again, the course chart is loaded very quickly from the cache.</span></p>
242:
243: <p><span style='layout-grid-mode:line'>2. An instructor can sort the chart according
244:
245: to user name, last name, as well as, the section which student belongs to.</span></p>
246:
247: <div style='border:solid windowtext .5pt;padding:1.0pt 4.0pt 1.0pt 4.0pt'>
248:
249: <p align=center style='text-align:center;
250:
251: border:none;padding:0in;'><span style='font-size:8.0pt;font-family:Arial;
252:
253: display:none'>Top of Form</span></p>
254:
255: </div>
256:
257: <div style='border:solid windowtext .5pt;padding:1.0pt 4.0pt 0in 4.0pt'>
258:
259: <p align=center style='
260:
261: text-align:center;
262:
263: border:none;padding:
264:
265: 0in;'><b>Sort by: </b><span
266:
267: style='font-weight:normal'> <img width=53 height=23
268:
269: src="Session%20Tw2_files/image003.png" v:shapes="_x0000_i1025">
270:
271: <img width=51 height=23
272:
273: src="Session%20Tw2_files/image006.png" v:shapes="_x0000_i1026">
274:
275: <img width=40 height=23
276:
277: src="Session%20Tw2_files/image009.png" v:shapes="_x0000_i1027"> <br>
278:
279: <br>
280:
281: </span></p>
282:
283: </div>
284:
285: <p>3. The instructor is able to select the ÒexpiredÓ students (who dropped the
286:
287: course earlier) or ÒactiveÓ students or ÒanyÓ (all the) students.</p>
288:
289: <div style='border:solid windowtext .5pt;padding:1.0pt 4.0pt 1.0pt 0in'>
290:
291: <p align=center style='
292:
293: text-align:center;
294:
295: border:none;padding:0in;
296:
297: '><br>
298:
299: <b>Student Status: </b><span style='font-weight:normal'> <img width=66 height=18
300:
301: src="Session%20Tw2_files/image012.png" v:shapes="_x0000_i1028">
302:
303: <img width=77 height=23
304:
305: src="Session%20Tw2_files/image015.png" v:shapes="_x0000_i1029"> </span></p>
306:
307: </div>
308:
309: <div style='border:none;border-top:solid windowtext .75pt;padding:1.0pt 0in 0in 0in'>
310:
311: <p align=center style='text-align:center;border:none;
312:
313: padding:0in;'><span
314:
315: style='font-size:8.0pt;font-family:Arial;display:none'>Bottom of Form</span></p>
316:
317: </div>
318:
319: <h3 style='line-height:200%'><a name="_Toc421867140"><span style='layout-grid-mode:
320:
321: line'>lonstatistics.pm</span></a></h3>
322:
323: <p><span style='layout-grid-mode:line'>In ÒstatÓ button of Òremote controlÓ, a
324:
325: menu with three options is provided for instructor: </span></p>
326:
327: <p> <span style='layout-grid-mode:line'>1)<span
328:
329: style='font:7.0pt "Times New Roman"'> </span></span> <span
330:
331: style='layout-grid-mode:line'>Problem stats</span></p>
332:
333: <p> <span style='layout-grid-mode:line'>2)<span
334:
335: style='font:7.0pt "Times New Roman"'> </span></span> <span
336:
337: style='layout-grid-mode:line'>Problem Analysis</span></p>
338:
339: <p> <span style='font-size:11.0pt;
340:
341: layout-grid-mode:line'>3)<span style='font:7.0pt "Times New Roman"'>
342:
343: </span></span> <span style='layout-grid-mode:line'>Student Assessment</span></p>
344:
345: <h4 style='line-height:150%'><span style='font-size:6.0pt;font-family:Arial;
346:
347: layout-grid-mode:line;font-weight:normal'> </span></h4>
348:
349: <h4><span style='font-size:12.0pt;font-family:Arial;layout-grid-mode:line'>
350:
351: </span></h4>
352:
353: <h4><span style='font-size:12.0pt;font-family:Arial;layout-grid-mode:line;
354:
355: font-weight:normal'>Problem Stats</span></h4>
356:
357: <p><span style='layout-grid-mode:line'>Ò<i>Problem Stats</i></span><span
358:
359: style='layout-grid-mode:line'>Ó button provides a table<a href="#_ftn1" name="_ftnref1" title=""><span class=MsoFootnoteReference>
360:
361: [1] </span></a> which includes statistical information about every problem,
362:
363: as you see in <b>Fig. 3.2.2</b></span><span style='layout-grid-mode:line'>.
364:
365: The function ExtractStudentData in lonstatitics Perl Module fetches all the
366:
367: data from a particular student<a name="_Hlt9981185"></a> .db file into a big
368:
369: hash in local machine. It uses dump function, which communicates via lonc/lond
370:
371: to get the student data from student repository (data server) and then all versions
372:
373: of student submissions computed according to every problem. The results are
374:
375: stored in an array in the memory. Before computing the studentsÕ tries
376:
377: in a particular problem, the different parts of problem are distinguished by
378:
379: considering the meta-data, which is provided for every problem. </span></p>
380:
381: <p><span style='"HYPERLINK \0022http\:\/\/deepthought\.lite\.msu\.edu\/res\/msu\/mmp\/kap1\/calckap1\.sequence\0022 \\t \0022_blank\0022"'><span
382:
383: class=MsoHyperlink><span style='color:blue'>Homework Set 1</span></span></span>
384:
385: </p>
386:
387: <table border=1 cellspacing=0 cellpadding=0>
388:
389: <tr>
390:
391: <td width=21 class="Normal"> <p align=center style='text-align:center'><b>P#</b></p></td>
392:
393: <td width=72 class="Normal"> <p align=center style='text-align:center'><b>
394:
395: <img width=94 height=23
396:
397: src="Session%20Tw2_files/image018.png" v:shapes="_x0000_i1030"> </b></p></td>
398:
399: <td width=37 class="Normal"> <p align=center style='text-align:center'><b>
400:
401: <img width=41 height=23
402:
403: src="Session%20Tw2_files/image021.png" v:shapes="_x0000_i1031"> </b></p></td>
404:
405: <td width=29 class="Normal"> <p align=center style='text-align:center'><b>
406:
407: <img width=31 height=23
408:
409: src="Session%20Tw2_files/image024.png" v:shapes="_x0000_i1032"> </b></p></td>
410:
411: <td width=26 class="Normal"> <p align=center style='text-align:center'><b>
412:
413: <img width=28 height=23
414:
415: src="Session%20Tw2_files/image027.png" v:shapes="_x0000_i1033"> </b></p></td>
416:
417: <td width=30 class="Normal"> <p align=center style='text-align:center'><b>
418:
419: <img width=32 height=23
420:
421: src="Session%20Tw2_files/image030.png" v:shapes="_x0000_i1034"> </b></p></td>
422:
423: <td width=31 class="Normal"> <p align=center style='text-align:center'><b>
424:
425: <img width=33 height=23
426:
427: src="Session%20Tw2_files/image033.png" v:shapes="_x0000_i1035"> </b></p></td>
428:
429: <td width=29 class="Normal"> <p align=center style='text-align:center'><b>
430:
431: <img width=31 height=23
432:
433: src="Session%20Tw2_files/image036.png" v:shapes="_x0000_i1036"> </b></p></td>
434:
435: <td width=36 class="Normal"> <p align=center style='text-align:center'><b>
436:
437: <img width=40 height=23
438:
439: src="Session%20Tw2_files/image039.png" v:shapes="_x0000_i1037"> </b></p></td>
440:
441: <td width=32 class="Normal"> <p align=center style='text-align:center'><b>
442:
443: <img width=35 height=23
444:
445: src="Session%20Tw2_files/image042.png" v:shapes="_x0000_i1038"> </b></p></td>
446:
447: <td width=26 class="Normal"> <p align=center style='text-align:center'><b>
448:
449: <img width=28 height=23
450:
451: src="Session%20Tw2_files/image045.png" v:shapes="_x0000_i1039"> </b></p></td>
452:
453: <td width=33 class="Normal"> <p align=center style='text-align:center'><b>
454:
455: <img width=36 height=23
456:
457: src="Session%20Tw2_files/image048.png" v:shapes="_x0000_i1040"> </b></p></td>
458:
459: <td width=35 class="Normal"> <p align=center style='text-align:center'><b>
460:
461: <img width=38 height=23
462:
463: src="Session%20Tw2_files/image051.png" v:shapes="_x0000_i1041"> </b></p></td>
464:
465: <td width=37 class="Normal"> <p align=center style='text-align:center'><b>
466:
467: <img width=41 height=23
468:
469: src="Session%20Tw2_files/image054.png" v:shapes="_x0000_i1042"> </b></p></td>
470:
471: </tr>
472:
473: <tr>
474:
475: <td width=21 class="Normal"> <p>1</p></td>
476:
477: <td width=72 class="Normal"> <p><span style='font-size:9.0pt'><span style='"HYPERLINK \0022http\:\/\/deepthought\.lite\.msu\.edu\/res\/msu\/physicslib\/msuphysicslib\/01_Math_1\/msu-prob11\.problem\0022 \\t \0022_blank\0022"'><span
478:
479: class=MsoHyperlink><span style='color:blue'>Calculator Skills</span></span></span></span></p></td>
480:
481: <td width=37 bgcolor="white" class="Normal"> <p>256</p></td>
482:
483: <td width=29 bgcolor="white" class="Normal"> <p>267</p></td>
484:
485: <td width=26 bgcolor="white" class="Normal"> <p>3</p></td>
486:
487: <td width=30 bgcolor="white" class="Normal"> <p>1.04</p></td>
488:
489: <td width=31 bgcolor="white" class="Normal"> <p>256</p></td>
490:
491: <td width=29 bgcolor="white" class="Normal"> <p>0</p></td>
492:
493: <td width=36 bgcolor="white" class="Normal"> <p>0.0</p></td>
494:
495: <td width=32 bgcolor="white" class="Normal"> <p>0.04</p></td>
496:
497: <td width=26 bgcolor="white" class="Normal"> <p>0.2</p></td>
498:
499: <td width=33 bgcolor="white" class="Normal"> <p>5.7</p></td>
500:
501: <td width=35 bgcolor="white" class="Normal"> <p>0.03</p></td>
502:
503: <td width=37 bgcolor="white" class="Normal"> <p>0.00</p></td>
504:
505: </tr>
506:
507: <tr>
508:
509: <td width=21 class="Normal"> <p>2</p></td>
510:
511: <td width=72 class="Normal"> <p><span style='font-size:9.0pt'><span style='"HYPERLINK \0022http\:\/\/deepthought\.lite\.msu\.edu\/res\/msu\/physicslib\/msuphysicslib\/01_Math_1\/msu-prob10\.problem\0022 \\t \0022_blank\0022"'><span
512:
513: class=MsoHyperlink><span style='color:blue'>Numbers</span></span></span></span></p></td>
514:
515: <td width=37 bgcolor="white" class="Normal"> <p>256</p></td>
516:
517: <td width=29 bgcolor="white" class="Normal"> <p>414</p></td>
518:
519: <td width=26 bgcolor="white" class="Normal"> <p>17</p></td>
520:
521: <td width=30 bgcolor="white" class="Normal"> <p>1.62</p></td>
522:
523: <td width=31 bgcolor="white" class="Normal"> <p>255</p></td>
524:
525: <td width=29 bgcolor="white" class="Normal"> <p>0</p></td>
526:
527: <td width=36 bgcolor="white" class="Normal"> <p>0.4</p></td>
528:
529: <td width=32 bgcolor="white" class="Normal"> <p>0.38</p></td>
530:
531: <td width=26 bgcolor="white" class="Normal"> <p>1.6</p></td>
532:
533: <td width=33 bgcolor="white" class="Normal"> <p>5.7</p></td>
534:
535: <td width=35 bgcolor="white" class="Normal"> <p>0.11</p></td>
536:
537: <td width=37 bgcolor="white" class="Normal"> <p>0.02</p></td>
538:
539: </tr>
540:
541: <tr>
542:
543: <td width=21 class="Normal"> <p>3</p></td>
544:
545: <td width=72 class="Normal"> <p><span style='font-size:9.0pt'><span style='"HYPERLINK \0022http\:\/\/deepthought\.lite\.msu\.edu\/res\/msu\/physicslib\/msuphysicslib\/03_Units_Scaling\/msu-prob22\.problem\0022 \\t \0022_blank\0022"'><span
546:
547: class=MsoHyperlink><span style='color:blue'>Speed</span></span></span></span></p></td>
548:
549: <td width=37 bgcolor="white" class="Normal"> <p>256</p></td>
550:
551: <td width=29 bgcolor="white" class="Normal"> <p>698</p></td>
552:
553: <td width=26 bgcolor="white" class="Normal"> <p>13</p></td>
554:
555: <td width=30 bgcolor="white" class="Normal"> <p>2.73</p></td>
556:
557: <td width=31 bgcolor="white" class="Normal"> <p>255</p></td>
558:
559: <td width=29 bgcolor="white" class="Normal"> <p>0</p></td>
560:
561: <td width=36 bgcolor="white" class="Normal"> <p>0.4</p></td>
562:
563: <td width=32 bgcolor="white" class="Normal"> <p>0.63</p></td>
564:
565: <td width=26 bgcolor="white" class="Normal"> <p>2.2</p></td>
566:
567: <td width=33 bgcolor="white" class="Normal"> <p>1.9</p></td>
568:
569: <td width=35 bgcolor="white" class="Normal"> <p>0.06</p></td>
570:
571: <td width=37 bgcolor="white" class="Normal"> <p>0.02</p></td>
572:
573: </tr>
574:
575: <tr>
576:
577: <td width=21 class="Normal"> <p>4</p></td>
578:
579: <td width=72 class="Normal"> <p><span style='font-size:9.0pt'><span style='"HYPERLINK \0022http\:\/\/deepthought\.lite\.msu\.edu\/res\/msu\/physicslib\/msuphysicslib\/01_Math_1\/msu-prob13\.problem\0022 \\t \0022_blank\0022"'><span
580:
581: class=MsoHyperlink><span style='color:blue'>Perimeter</span></span></span></span></p></td>
582:
583: <td width=37 bgcolor="white" class="Normal"> <p>256</p></td>
584:
585: <td width=29 bgcolor="white" class="Normal"> <p>388</p></td>
586:
587: <td width=26 bgcolor="white" class="Normal"> <p>7</p></td>
588:
589: <td width=30 bgcolor="white" class="Normal"> <p>1.52</p></td>
590:
591: <td width=31 bgcolor="white" class="Normal"> <p>255</p></td>
592:
593: <td width=29 bgcolor="white" class="Normal"> <p>0</p></td>
594:
595: <td width=36 bgcolor="white" class="Normal"> <p>0.4</p></td>
596:
597: <td width=32 bgcolor="white" class="Normal"> <p>0.34</p></td>
598:
599: <td width=26 bgcolor="white" class="Normal"> <p>0.9</p></td>
600:
601: <td width=33 bgcolor="white" class="Normal"> <p>2.4</p></td>
602:
603: <td width=35 bgcolor="white" class="Normal"> <p>-0.00</p></td>
604:
605: <td width=37 bgcolor="white" class="Normal"> <p>0.02</p></td>
606:
607: </tr>
608:
609: <tr>
610:
611: <td width=21 class="Normal"> <p>5</p></td>
612:
613: <td width=72 class="Normal"> <p><span style='font-size:9.0pt'><span style='"HYPERLINK \0022http\:\/\/deepthought\.lite\.msu\.edu\/res\/msu\/physicslib\/devolibrary\/type-math\/fraction-rlt-235\.problem\0022 \\t \0022_blank\0022"'><span
614:
615: class=MsoHyperlink><span style='color:blue'>Reduce a Fraction</span></span></span></span></p></td>
616:
617: <td width=37 bgcolor="white" class="Normal"> <p>256</p></td>
618:
619: <td width=29 bgcolor="white" class="Normal"> <p>315</p></td>
620:
621: <td width=26 bgcolor="white" class="Normal"> <p>4</p></td>
622:
623: <td width=30 bgcolor="white" class="Normal"> <p>1.23</p></td>
624:
625: <td width=31 bgcolor="white" class="Normal"> <p>256</p></td>
626:
627: <td width=29 bgcolor="white" class="Normal"> <p>0</p></td>
628:
629: <td width=36 bgcolor="white" class="Normal"> <p>0.0</p></td>
630:
631: <td width=32 bgcolor="white" class="Normal"> <p>0.19</p></td>
632:
633: <td width=26 bgcolor="white" class="Normal"> <p>0.5</p></td>
634:
635: <td width=33 bgcolor="white" class="Normal"> <p>2.3</p></td>
636:
637: <td width=35 bgcolor="white" class="Normal"> <p>0.01</p></td>
638:
639: <td width=37 bgcolor="white" class="Normal"> <p>0.00</p></td>
640:
641: </tr>
642:
643: <tr>
644:
645: <td width=21 class="Normal"> <p>6</p></td>
646:
647: <td width=72 class="Normal"> <p><span style='font-size:9.0pt'><span style='"HYPERLINK \0022http\:\/\/deepthought\.lite\.msu\.edu\/res\/msu\/physicslib\/devolibrary\/type-math\/fract-add-sub-div-p11\.problem\0022 \\t \0022_blank\0022"'><span
648:
649: class=MsoHyperlink><span style='color:blue'>Calculating with Fractions</span></span></span></span></p></td>
650:
651: <td width=37 bgcolor="white" class="Normal"> <p>256</p></td>
652:
653: <td width=29 bgcolor="white" class="Normal"> <p>393</p></td>
654:
655: <td width=26 bgcolor="white" class="Normal"> <p>7</p></td>
656:
657: <td width=30 bgcolor="white" class="Normal"> <p>1.54</p></td>
658:
659: <td width=31 bgcolor="white" class="Normal"> <p>255</p></td>
660:
661: <td width=29 bgcolor="white" class="Normal"> <p>0</p></td>
662:
663: <td width=36 bgcolor="white" class="Normal"> <p>0.4</p></td>
664:
665: <td width=32 bgcolor="white" class="Normal"> <p>0.35</p></td>
666:
667: <td width=26 bgcolor="white" class="Normal"> <p>0.9</p></td>
668:
669: <td width=33 bgcolor="white" class="Normal"> <p>2.0</p></td>
670:
671: <td width=35 bgcolor="white" class="Normal"> <p>0.15</p></td>
672:
673: <td width=37 bgcolor="white" class="Normal"> <p>0.02</p></td>
674:
675: </tr>
676:
677: <tr>
678:
679: <td width=21 class="Normal"> <p>7</p></td>
680:
681: <td width=72 class="Normal"> <p><span style='font-size:9.0pt'><span style='"HYPERLINK \0022http\:\/\/deepthought\.lite\.msu\.edu\/res\/msu\/physicslib\/msuphysicslib\/01_Math_1\/msu-prob04\.problem\0022 \\t \0022_blank\0022"'><span
682:
683: class=MsoHyperlink><span style='color:blue'>Area of a Balloon</span></span></span></span></p></td>
684:
685: <td width=37 bgcolor="white" class="Normal"> <p>254</p></td>
686:
687: <td width=29 bgcolor="white" class="Normal"> <p>601</p></td>
688:
689: <td width=26 bgcolor="white" class="Normal"> <p>12</p></td>
690:
691: <td width=30 bgcolor="white" class="Normal"> <p>2.37</p></td>
692:
693: <td width=31 bgcolor="white" class="Normal"> <p>247</p></td>
694:
695: <td width=29 bgcolor="white" class="Normal"> <p>0</p></td>
696:
697: <td width=36 bgcolor="white" class="Normal"> <p>2.8</p></td>
698:
699: <td width=32 bgcolor="white" class="Normal"> <p>0.59</p></td>
700:
701: <td width=26 bgcolor="white" class="Normal"> <p>1.8</p></td>
702:
703: <td width=33 bgcolor="white" class="Normal"> <p>1.8</p></td>
704:
705: <td width=35 bgcolor="white" class="Normal"> <p>-0.05</p></td>
706:
707: <td width=37 bgcolor="white" class="Normal"> <p>-0.02</p></td>
708:
709: </tr>
710:
711: <tr>
712:
713: <td width=21 class="Normal"> <p>8</p></td>
714:
715: <td width=72 class="Normal"> <p><span style='font-size:9.0pt'><span style='"HYPERLINK \0022http\:\/\/deepthought\.lite\.msu\.edu\/res\/msu\/physicslib\/msuphysicslib\/01_Math_1\/msu-prob07\.problem\0022 \\t \0022_blank\0022"'><span
716:
717: class=MsoHyperlink><span style='color:blue'>Volume of a Balloon</span></span></span></span></p></td>
718:
719: <td width=37 bgcolor="white" class="Normal"> <p>252</p></td>
720:
721: <td width=29 bgcolor="white" class="Normal"> <p>565</p></td>
722:
723: <td width=26 bgcolor="white" class="Normal"> <p>11</p></td>
724:
725: <td width=30 bgcolor="white" class="Normal"> <p>2.24</p></td>
726:
727: <td width=31 bgcolor="white" class="Normal"> <p>243</p></td>
728:
729: <td width=29 bgcolor="white" class="Normal"> <p>0</p></td>
730:
731: <td width=36 bgcolor="white" class="Normal"> <p>3.6</p></td>
732:
733: <td width=32 bgcolor="white" class="Normal"> <p>0.57</p></td>
734:
735: <td width=26 bgcolor="white" class="Normal"> <p>1.9</p></td>
736:
737: <td width=33 bgcolor="white" class="Normal"> <p>2.0</p></td>
738:
739: <td width=35 bgcolor="white" class="Normal"> <p>-0.06</p></td>
740:
741: <td width=37 bgcolor="white" class="Normal"> <p>-0.03</p></td>
742:
743: </tr>
744:
745: <tr>
746:
747: <td width=21 class="Normal"> <p>9</p></td>
748:
749: <td width=72 class="Normal"> <p><span style='font-size:9.0pt'><span style='"HYPERLINK \0022http\:\/\/deepthought\.lite\.msu\.edu\/res\/msu\/physicslib\/msuphysicslib\/01_Math_1\/msu-prob12\.problem\0022 \\t \0022_blank\0022"'><span
750:
751: class=MsoHyperlink><span style='color:blue'>Numerical Value of Fraction</span></span></span></span></p></td>
752:
753: <td width=37 bgcolor="white" class="Normal"> <p>256</p></td>
754:
755: <td width=29 bgcolor="white" class="Normal"> <p>268</p></td>
756:
757: <td width=26 bgcolor="white" class="Normal"> <p>4</p></td>
758:
759: <td width=30 bgcolor="white" class="Normal"> <p>1.05</p></td>
760:
761: <td width=31 bgcolor="white" class="Normal"> <p>256</p></td>
762:
763: <td width=29 bgcolor="white" class="Normal"> <p>0</p></td>
764:
765: <td width=36 bgcolor="white" class="Normal"> <p>0.0</p></td>
766:
767: <td width=32 bgcolor="white" class="Normal"> <p>0.04</p></td>
768:
769: <td width=26 bgcolor="white" class="Normal"> <p>0.2</p></td>
770:
771: <td width=33 bgcolor="white" class="Normal"> <p>3.4</p></td>
772:
773: <td width=35 bgcolor="white" class="Normal"> <p>0.01</p></td>
774:
775: <td width=37 bgcolor="white" class="Normal"> <p>0.00</p></td>
776:
777: </tr>
778:
779: <tr>
780:
781: <td width=21 class="Normal"> <p>10</p></td>
782:
783: <td width=72 class="Normal"> <p><span style='font-size:9.0pt'><span style='"HYPERLINK \0022http\:\/\/deepthought\.lite\.msu\.edu\/res\/msu\/physicslib\/msuphysicslib\/03_Units_Scaling\/msu-prob17\.problem\0022 \\t \0022_blank\0022"'><span
784:
785: class=MsoHyperlink><span style='color:blue'>Units</span></span></span></span></p></td>
786:
787: <td width=37 bgcolor="white" class="Normal"> <p>256</p></td>
788:
789: <td width=29 bgcolor="white" class="Normal"> <p>1116</p></td>
790:
791: <td width=26 bgcolor="white" class="Normal"> <p>20</p></td>
792:
793: <td width=30 bgcolor="white" class="Normal"> <p>4.36</p></td>
794:
795: <td width=31 bgcolor="white" class="Normal"> <p>246</p></td>
796:
797: <td width=29 bgcolor="white" class="Normal"> <p>0</p></td>
798:
799: <td width=36 bgcolor="white" class="Normal"> <p>3.9</p></td>
800:
801: <td width=32 bgcolor="white" class="Normal"> <p>0.78</p></td>
802:
803: <td width=26 bgcolor="white" class="Normal"> <p>4.2</p></td>
804:
805: <td width=33 bgcolor="white" class="Normal"> <p>1.9</p></td>
806:
807: <td width=35 bgcolor="white" class="Normal"> <p>0.18</p></td>
808:
809: <td width=37 bgcolor="white" class="Normal"> <p>0.03</p></td>
810:
811: </tr>
812:
813: <tr>
814:
815: <td width=21 class="Normal"> <p>11</p></td>
816:
817: <td width=72 class="Normal"> <p><span style='font-size:9.0pt'><span style='"HYPERLINK \0022http\:\/\/deepthought\.lite\.msu\.edu\/res\/msu\/physicslib\/msuphysicslib\/06_Vectors_Scalars\/msu-prob07\.problem\0022 \\t \0022_blank\0022"'><span
818:
819: class=MsoHyperlink><span style='color:blue'>Vector versus Scalar</span></span></span></span></p></td>
820:
821: <td width=37 bgcolor="white" class="Normal"> <p>254</p></td>
822:
823: <td width=29 bgcolor="white" class="Normal"> <p>749</p></td>
824:
825: <td width=26 bgcolor="white" class="Normal"> <p>11</p></td>
826:
827: <td width=30 bgcolor="white" class="Normal"> <p>2.95</p></td>
828:
829: <td width=31 bgcolor="white" class="Normal"> <p>251</p></td>
830:
831: <td width=29 bgcolor="white" class="Normal"> <p>0</p></td>
832:
833: <td width=36 bgcolor="white" class="Normal"> <p>1.2</p></td>
834:
835: <td width=32 bgcolor="white" class="Normal"> <p>0.66</p></td>
836:
837: <td width=26 bgcolor="white" class="Normal"> <p>2.2</p></td>
838:
839: <td width=33 bgcolor="white" class="Normal"> <p>1.1</p></td>
840:
841: <td width=35 bgcolor="white" class="Normal"> <p>-0.05</p></td>
842:
843: <td width=37 bgcolor="white" class="Normal"> <p>-0.05</p></td>
844:
845: </tr>
846:
847: <tr>
848:
849: <td width=21 class="Normal"> <p>12</p></td>
850:
851: <td width=72 class="Normal"> <p><span style='font-size:9.0pt'><span style='"HYPERLINK \0022http\:\/\/deepthought\.lite\.msu\.edu\/res\/msu\/physicslib\/msuphysicslib\/06_Vectors_Scalars\/msu-prob10\.problem\0022 \\t \0022_blank\0022"'><span
852:
853: class=MsoHyperlink><span style='color:blue'>Adding Vectors</span></span></span></span></p></td>
854:
855: <td width=37 bgcolor="white" class="Normal"> <p>253</p></td>
856:
857: <td width=29 bgcolor="white" class="Normal"> <p>1026</p></td>
858:
859: <td width=26 bgcolor="white" class="Normal"> <p>20</p></td>
860:
861: <td width=30 bgcolor="white" class="Normal"> <p>4.06</p></td>
862:
863: <td width=31 bgcolor="white" class="Normal"> <p>250</p></td>
864:
865: <td width=29 bgcolor="white" class="Normal"> <p>0</p></td>
866:
867: <td width=36 bgcolor="white" class="Normal"> <p>1.2</p></td>
868:
869: <td width=32 bgcolor="white" class="Normal"> <p>0.76</p></td>
870:
871: <td width=26 bgcolor="white" class="Normal"> <p>3.6</p></td>
872:
873: <td width=33 bgcolor="white" class="Normal"> <p>1.8</p></td>
874:
875: <td width=35 bgcolor="white" class="Normal"> <p>0.14</p></td>
876:
877: <td width=37 bgcolor="white" class="Normal"> <p>0.00</p></td>
878:
879: </tr>
880:
881: <tr>
882:
883: <td width=21 class="Normal"> <p>13</p></td>
884:
885: <td width=72 class="Normal"> <p><span style='font-size:9.0pt'><span style='"HYPERLINK \0022http\:\/\/deepthought\.lite\.msu\.edu\/res\/msu\/physicslib\/msuphysicslib\/02_Math_2_Trig\/msu-prob13\.problem\0022 \\t \0022_blank\0022"'><span
886:
887: class=MsoHyperlink><span style='color:blue'>Proximity</span></span></span></span></p></td>
888:
889: <td width=37 bgcolor="white" class="Normal"> <p>249</p></td>
890:
891: <td width=29 bgcolor="white" class="Normal"> <p>663</p></td>
892:
893: <td width=26 bgcolor="white" class="Normal"> <p>19</p></td>
894:
895: <td width=30 bgcolor="white" class="Normal"> <p>2.66</p></td>
896:
897: <td width=31 bgcolor="white" class="Normal"> <p>239</p></td>
898:
899: <td width=29 bgcolor="white" class="Normal"> <p>1</p></td>
900:
901: <td width=36 bgcolor="white" class="Normal"> <p>3.6</p></td>
902:
903: <td width=32 bgcolor="white" class="Normal"> <p>0.64</p></td>
904:
905: <td width=26 bgcolor="white" class="Normal"> <p>2.3</p></td>
906:
907: <td width=33 bgcolor="white" class="Normal"> <p>2.8</p></td>
908:
909: <td width=35 bgcolor="white" class="Normal"> <p>0.11</p></td>
910:
911: <td width=37 bgcolor="white" class="Normal"> <p>-0.10</p></td>
912:
913: </tr>
914:
915: </table>
916:
917: <p><span style='font-size:14.0pt'><b>Fig. 3.2.2</b></span><span
918:
919: style='font-size:14.0pt'>: Statistics table includes general statistics of every
920:
921: problem of the course</span></p>
922:
923: <p><span style='font-size:11.0pt;layout-grid-mode:line'>Every part of <i>multi-part</i></span><span style='font-size:11.0pt;layout-grid-mode:
924:
925: line'> problems is distinguished as a separate problem. The <i>multi-instance</i></span><span
926:
927: style='font-size:11.0pt;layout-grid-mode:line'> problem is also considered separately,
928:
929: because a particular problem or one part of it might be used in different maps.
930:
931: Finally, the array, which includes all computed information from all students,
932:
933: sorted according to the problem order, underlying in homework sets order. Therefore,
934:
935: in this step we can compute the following statistical information:</span></p>
936:
937: <p> <span style='font-size:11.0pt;
938:
939: layout-grid-mode:line'>1.<span style='font:7.0pt "Times New Roman"'>
940:
941: </span></span> <span style='font-size:11.0pt;layout-grid-mode:line'><b>#Stdnts</b></span><span
942:
943: style='font-size:11.0pt;layout-grid-mode:line'>: Total
944:
945: number of students who take a look at the problem.(Let #Stdnts is equal to <i>n</i></span><span style='font-size:
946:
947: 11.0pt;layout-grid-mode:line'>)</span></p>
948:
949: <p> <span style='font-size:11.0pt;
950:
951: layout-grid-mode:line'>2.<span style='font:7.0pt "Times New Roman"'>
952:
953: </span></span> <span style='font-size:11.0pt;layout-grid-mode:line'><b>Tries:</b></span><span
954:
955: style='font-size:11.0pt;layout-grid-mode:line'>
956:
957: Total number of tries to solve the problem (</span><span style='font-size:11.0pt'>
958:
959: <img width=28 height=34
960:
961: src="Session%20Tw2_files/image057.png" v:shapes="_x0000_i1043"> where <i><sub>
962:
963: <img width=12 height=18
964:
965: src="Session%20Tw2_files/image060.png" v:shapes="_x0000_i1044"> </sub></i></span><span style='font-size:11.0pt'>denote
966:
967: a student try<span style='layout-grid-mode:line'>).</span></span></p>
968:
969: <p> <span style='font-size:11.0pt;
970:
971: layout-grid-mode:line'>3.<span style='font:7.0pt "Times New Roman"'>
972:
973: </span></span> <span style='font-size:11.0pt;layout-grid-mode:line'><b>Mod:
974:
975: </b></span><span style='font-size:11.0pt;layout-grid-mode:line'>
976:
977: Mode, </span><span style='font-size:11.0pt'>Maximum Number of Tries for solving
978:
979: the problem.</span></p>
980:
981: <p> <span style='font-size:11.0pt;
982:
983: layout-grid-mode:line'>4.<span style='font:7.0pt "Times New Roman"'>
984:
985: </span></span> <span style='font-size:11.0pt'><b>Mean:</b></span><span
986:
987: style='font-size:11.0pt'> Average Number
988:
989: of the Tries. </span></p>
990:
991: <p><span style='font-size:11.0pt'> <img width=11 height=13
992:
993: src="Session%20Tw2_files/image063.png" v:shapes="_x0000_i1045"> = <img width=38 height=34
994:
995: src="Session%20Tw2_files/image066.png" v:shapes="_x0000_i1046"> </span></p>
996:
997: <p> 5.<span style='font:7.0pt "Times New Roman"'> </span>
998:
999: <span style='font-size:11.0pt;layout-grid-mode:line'><b>#YES:</b></span><span
1000:
1001: style='font-size:11.0pt'> Number of students
1002:
1003: solved the problem correctly.</span></p>
1004:
1005: <p> <span style='font-size:11.0pt'>6.<span
1006:
1007: style='font:7.0pt "Times New Roman"'> </span></span> <span
1008:
1009: style='font-size:11.0pt'><b>#yes:</b></span><span style='font-size:11.0pt'>
1010:
1011: Number of students solved the problem by override. </span></p>
1012:
1013: <p><span style='font-size:11.0pt'>Sometimes, a student gets a correct answer after
1014:
1015: talking with the instructor. This type of correct answer is called Òcorrected
1016:
1017: by override.</span></p>
1018:
1019: <p> <span style='font-size:11.0pt'>7.<span
1020:
1021: style='font:7.0pt "Times New Roman"'> </span></span> <span
1022:
1023: style='font-size:11.0pt'><b>%Wrng:</b></span><span style='font-size:11.0pt'>
1024:
1025: Percentage of students tried to solve the problem but still incorrect. </span></p>
1026:
1027: <p><span style='font-size:11.0pt'> <img width=137 height=31
1028:
1029: src="Session%20Tw2_files/image069.png" v:shapes="_x0000_i1047"> </span></p>
1030:
1031: <p> <span style='font-size:11.0pt'>8.<span
1032:
1033: style='font:7.0pt "Times New Roman"'> </span></span> <span
1034:
1035: style='font-size:11.0pt'><b>S.D.:</b></span><span style='font-size:11.0pt'>
1036:
1037: <i>Standard Deviation</i></span><span style='font-size:11.0pt'> of the studentsÕ
1038:
1039: tries. </span></p>
1040:
1041: <p><span style='font-size:11.0pt'> <img width=98 height=40
1042:
1043: src="Session%20Tw2_files/image072.png" v:shapes="_x0000_i1048"> </span></p>
1044:
1045: <p> <span style='font-size:11.0pt'>9.<span
1046:
1047: style='font:7.0pt "Times New Roman"'> </span></span> <span
1048:
1049: style='font-size:11.0pt'><b>Skew.:</b></span><span style='font-size:11.0pt'>
1050:
1051: <i>Skewness</i></span><span
1052:
1053: style='font-size:11.0pt'> of the studentsÕ tries. </span></p>
1054:
1055: <p><span style='font-size:11.0pt'> <img width=194 height=76
1056:
1057: src="Session%20Tw2_files/image075.png" v:shapes="_x0000_i1049"> </span></p>
1058:
1059: <p> <span style='font-size:11.0pt'>10.<span
1060:
1061: style='font:7.0pt "Times New Roman"'> </span></span> <span
1062:
1063: style='font-size:11.0pt'><b>DoDiff:</b></span><span style='font-size:11.0pt'>
1064:
1065: <i>Degree of Difficulty</i></span><span
1066:
1067: style='font-size:11.0pt'> of the problem. </span></p>
1068:
1069: <p><span style='font-size:11.0pt'> <img width=100 height=38
1070:
1071: src="Session%20Tw2_files/image078.png" v:shapes="_x0000_i1050"> </span></p>
1072:
1073: <p><span style='font-size:11.0pt'>As you see Degree of Difficulty is always between
1074:
1075: 0 and 1. This is a good factor for an instructor to determine whether a problem
1076:
1077: is difficult, and what is the degree of this difficulty. Thus, DoDiff of each
1078:
1079: problem is saved in its meta data.</span></p>
1080:
1081: <p> <span style='font-size:11.0pt'>11.<span
1082:
1083: style='font:7.0pt "Times New Roman"'> </span></span> <span
1084:
1085: style='font-size:11.0pt'><b>Dis.F.:</b></span><span style='font-size:11.0pt'>
1086:
1087: <i>Discrimination Factor</i></span><a href="#_ftn2" name="_ftnref2"
1088:
1089: title=""><span class=MsoFootnoteReference><span style='font-size:11.0pt'> [2]
1090:
1091: </span></span></a><span
1092:
1093: style='font-size:11.0pt'> is an standard for evaluating how much a problem discriminates
1094:
1095: between the upper and the lower students. First, all of the students are
1096:
1097: sorted according to a criterion. Then, %27 of upper students and %27 lower students
1098:
1099: are selected from the sorted students applying the mentioned criterion. Finally
1100:
1101: we obtain the Discrimination Factor from the following difference:</span></p>
1102:
1103: <p><span style='font-size:11.0pt'><i>Applied a criterion in %27 upper students
1104:
1105: - Applied the same Criterion in %27 lower students.</i></span></p>
1106:
1107: <p class=MsoBodyTextIndent2 align=left style='text-align:left;line-height:normal'>Discrimination
1108:
1109: Factor is a number in interval [-1,1]. If this number is close to 1, it shows
1110:
1111: that only upper students have solved this problem. If it is close to 0 it shows
1112:
1113: that the upper students and the lowers are approximately the same in solving
1114:
1115: the problem. If this number is negative, it shows that the lower students have
1116:
1117: more successes in solving the problem, and thus this problem is very poor in
1118:
1119: discriminating the upper and lower students.</p>
1120:
1121: <p><span style='font-size:11.0pt'>In lonstatistics.pm we compute the Discrimination
1122:
1123: Factor from two criteria:</span></p>
1124:
1125: <p><span style='font-size:11.0pt'><i>1st Criterion </i></span><span style='font-size:11.0pt'>for
1126:
1127: Sorting the Students: <img width=138 height=41
1128:
1129: src="Session%20Tw2_files/image081.png" v:shapes="_x0000_i1051"> </span></p>
1130:
1131: <p><span style='font-size:11.0pt'><i>2nd Criterion</i></span><span style='font-size:11.0pt'>
1132:
1133: for Sorting the Students: <img width=87 height=41
1134:
1135: src="Session%20Tw2_files/image084.png" v:shapes="_x0000_i1052"> </span></p>
1136:
1137: <p> <span style='font-size:11.0pt;
1138:
1139: font-family:Symbol;layout-grid-mode:line'>á<span style='font:7.0pt "Times New Roman"'>
1140:
1141: </span></span> <span style='font-size:11.0pt;layout-grid-mode:line'><b>Change
1142:
1143: the stats table sorting </b></span></p>
1144:
1145: <p><span style='font-size:11.0pt;layout-grid-mode:line'>As you see in Fig. 3.2.
1146:
1147: 2, all headers in the stats table are buttons that change the order of the table.
1148:
1149: Users can change increasingly or decreasingly every column of the table. First
1150:
1151: the user select the Ò<i>ascending</i></span><span
1152:
1153: style='font-size:11.0pt;layout-grid-mode:line'>Ó or Ò<i>descending</i></span><span
1154:
1155: style='font-size:11.0pt;layout-grid-mode:line'>Ó option, then he/she can change
1156:
1157: the order of the table with clicking the header of his/her interested header.
1158:
1159: If the user changes the order the table, all information is shown in one table,
1160:
1161: each row corresponds to a particular problem. If the user selects the first
1162:
1163: column, Òhomework set orderÓ, the information is shown in different tables,
1164:
1165: each table corresponds to a particular homework set. </span></p>
1166:
1167: <p> <span style='font-size:11.0pt;
1168:
1169: font-family:Symbol;layout-grid-mode:line'>á<span style='font:7.0pt "Times New Roman"'>
1170:
1171: </span></span> <span style='font-size:11.0pt;layout-grid-mode:line'><b>Graphical
1172:
1173: chart </b></span></p>
1174:
1175: <p><span style='font-size:11.0pt;layout-grid-mode:line'>Two important features
1176:
1177: in this page might be seen through the graphical charts. That is, a user could
1178:
1179: see the content of Ò%wrongÓ column and Òdegree of difficulty of problemsÓ in
1180:
1181: the graphical chart as is shown in Fig. 3.2. 3 and 4 for homework set 1 in course
1182:
1183: PHY183 SS02. These graphical charts are produced dynamically by calling a CGI
1184:
1185: scripts, (graph.gif) which is located in /home/httpd/cgi-bin/</span></p>
1186:
1187: <p> <img width=231 height=173
1188:
1189: src="Session%20Tw2_files/image086.jpg" v:shapes="_x0000_i1053"> <span
1190:
1191: style='layout-grid-mode:line'> <img width=230 height=170
1192:
1193: src="Session%20Tw2_files/image088.jpg" v:shapes="_x0000_i1054"> </span></p>
1194:
1195: <p><b>Fig. 3.2. 3</b><span
1196:
1197: style='font-weight:normal'>: Degree of difficulty graph
1198:
1199: </span><b>Fig. 3.2. 4</b><span style='font-weight:normal'>: %Wrong graph</span></p>
1200:
1201: <h4 style='line-height:150%'><span style='font-size:12.0pt;font-family:Arial;
1202:
1203: layout-grid-mode:line'> </span></h4>
1204:
1205: <h3><a name="_Toc421867141"><span style='layout-grid-mode:line'>Problem Analysis</span></a></h3>
1206:
1207: <p><span style='font-size:11.0pt'>Conceptual option response problems, in which
1208:
1209: the students are given several concepts that are randomly assigned to each student,
1210:
1211: are more difficult than numerical simple problems. Instructors usually
1212:
1213: want to see the studentsÕ tries according to every particular concept separately.
1214:
1215: ÒProblem AnalysisÓ button provides all response option problems in one table
1216:
1217: as follows in the <b>Fig. 3.2.5.</b></span><span style='font-size:11.0pt'> </span></p>
1218:
1219: <div style='border:solid windowtext .5pt;padding:1.0pt 0in 1.0pt 4.0pt'>
1220:
1221: <p style='border:none;padding:0in;'><span style='font-size:11.0pt'>Total number
1222:
1223: of students: 263</span></p>
1224:
1225: <p style='border:none;padding:0in;'><b>Select number of intervals</b><span style='font-weight:normal'>
1226:
1227: <img width=53 height=18
1228:
1229: src="Session%20Tw2_files/image091.png" v:shapes="_x0000_i1055"> </span></p>
1230:
1231: <p style='border:none;padding:0in;'><b>Option Response Problems</b><span
1232:
1233: style='font-weight:normal'> </span><b>in course PHY183 SS02:</b></p>
1234:
1235: </div>
1236:
1237: <table border=1 cellspacing=0 cellpadding=0>
1238:
1239: <tr>
1240:
1241: <td width=15 class="Normal"> <p align=center style='text-align:center'><b>#
1242:
1243: </b></p></td>
1244:
1245: <td width=83 class="Normal"> <p align=center style='text-align:center'><b>Problem
1246:
1247: Title </b></p></td>
1248:
1249: <td width=298 class="Normal"> <p align=center style='text-align:center'><b>Resource
1250:
1251: </b></p></td>
1252:
1253: <td width=77 class="Normal"> <p align=center style='text-align:center'><b>Address
1254:
1255: </b></p></td>
1256:
1257: </tr>
1258:
1259: <tr>
1260:
1261: <td width=15 class="Normal"> <p>1 </p></td>
1262:
1263: <td width=83 bgcolor="white" class="Normal"> <p><span style='"HYPERLINK \0022http\:\/\/deepthought\.lite\.msu\.edu\/res\/msu\/physicslib\/msuphysicslib\/01_Math_1\/msu-prob10\.problem\0022 \\t \0022_blank\0022"'><span
1264:
1265: class=MsoHyperlink><span style='color:blue'>Numbers</span></span></span> </p></td>
1266:
1267: <td width=298 bgcolor="white" class="Normal"> <p>/res/msu/physicslib/msuphysicslib/01_Math_1/msu-prob10.problem
1268:
1269: </p></td>
1270:
1271: <td width=77 class="Normal"> <p> <img width=72 height=23
1272:
1273: src="Session%20Tw2_files/image094.png" v:shapes="_x0000_i1056"> </p></td>
1274:
1275: </tr>
1276:
1277: <tr>
1278:
1279: <td width=15 class="Normal"> <p>2 </p></td>
1280:
1281: <td width=83 bgcolor="white" class="Normal"> <p><span style='"HYPERLINK \0022http\:\/\/deepthought\.lite\.msu\.edu\/res\/msu\/physicslib\/msuphysicslib\/03_Units_Scaling\/msu-prob22\.problem\0022 \\t \0022_blank\0022"'><span
1282:
1283: class=MsoHyperlink><span style='color:blue'>Speed</span></span></span> </p></td>
1284:
1285: <td width=298 bgcolor="white" class="Normal"> <p>/res/msu/physicslib/msuphysicslib/03_Units_Scaling/msu-prob22.problem
1286:
1287: </p></td>
1288:
1289: <td width=77 class="Normal"> <p> <img width=72 height=23
1290:
1291: src="Session%20Tw2_files/image097.png" v:shapes="_x0000_i1057"> </p></td>
1292:
1293: </tr>
1294:
1295: <tr>
1296:
1297: <td width=15 class="Normal"> <p>3 </p></td>
1298:
1299: <td width=83 bgcolor="white" class="Normal"> <p><span style='"HYPERLINK \0022http\:\/\/deepthought\.lite\.msu\.edu\/res\/msu\/physicslib\/msuphysicslib\/03_Units_Scaling\/msu-prob17\.problem\0022 \\t \0022_blank\0022"'><span
1300:
1301: class=MsoHyperlink><span style='color:blue'>Units</span></span></span> </p></td>
1302:
1303: <td width=298 bgcolor="white" class="Normal"> <p>/res/msu/physicslib/msuphysicslib/03_Units_Scaling/msu-prob17.problem
1304:
1305: </p></td>
1306:
1307: <td width=77 class="Normal"> <p> <img width=72 height=23
1308:
1309: src="Session%20Tw2_files/image100.png" v:shapes="_x0000_i1058"> </p></td>
1310:
1311: </tr>
1312:
1313: <tr>
1314:
1315: <td width=15 class="Normal"> <p>4 </p></td>
1316:
1317: <td width=83 bgcolor="white" class="Normal"> <p><span style='"HYPERLINK \0022http\:\/\/deepthought\.lite\.msu\.edu\/res\/msu\/physicslib\/msuphysicslib\/06_Vectors_Scalars\/msu-prob07\.problem\0022 \\t \0022_blank\0022"'><span
1318:
1319: class=MsoHyperlink><span style='color:blue'>Vector versus Scalar</span></span></span>
1320:
1321: </p></td>
1322:
1323: <td width=298 bgcolor="white" class="Normal"> <p>/res/msu/physicslib/msuphysicslib/06_Vectors_Scalars/msu-prob07.problem
1324:
1325: </p></td>
1326:
1327: <td width=77 class="Normal"> <p> <img width=72 height=23
1328:
1329: src="Session%20Tw2_files/image103.png" v:shapes="_x0000_i1059"> </p></td>
1330:
1331: </tr>
1332:
1333: <tr>
1334:
1335: <td width=15 class="Normal"> <p>5 </p></td>
1336:
1337: <td width=83 bgcolor="white" class="Normal"> <p><span style='"HYPERLINK \0022http\:\/\/deepthought\.lite\.msu\.edu\/res\/msu\/physicslib\/msuphysicslib\/06_Vectors_Scalars\/msu-prob10\.problem\0022 \\t \0022_blank\0022"'><span
1338:
1339: class=MsoHyperlink><span style='color:blue'>Adding Vectors</span></span></span>
1340:
1341: </p></td>
1342:
1343: <td width=298 bgcolor="white" class="Normal"> <p>/res/msu/physicslib/msuphysicslib/06_Vectors_Scalars/msu-prob10.problem
1344:
1345: </p></td>
1346:
1347: <td width=77 class="Normal"> <p> <img width=72 height=23
1348:
1349: src="Session%20Tw2_files/image106.png" v:shapes="_x0000_i1060"> </p></td>
1350:
1351: </tr>
1352:
1353: <tr>
1354:
1355: <td width=15 class="Normal"> <p>6 </p></td>
1356:
1357: <td width=83 bgcolor="white" class="Normal"> <p><span style='"HYPERLINK \0022http\:\/\/deepthought\.lite\.msu\.edu\/res\/msu\/physicslib\/msuphysicslib\/05_1D_Motion\/msu-prob16\.problem\0022 \\t \0022_blank\0022"'><span
1358:
1359: class=MsoHyperlink><span style='color:blue'>Traveling Car</span></span></span>
1360:
1361: </p></td>
1362:
1363: <td width=298 bgcolor="white" class="Normal"> <p>/res/msu/physicslib/msuphysicslib/05_1D_Motion/msu-prob16.problem
1364:
1365: </p></td>
1366:
1367: <td width=77 class="Normal"> <p> <img width=59 height=23
1368:
1369: src="Session%20Tw2_files/image109.png" v:shapes="_x0000_i1061"> </p></td>
1370:
1371: </tr>
1372:
1373: <tr>
1374:
1375: <td width=15 class="Normal"> <p>7 </p></td>
1376:
1377: <td width=83 bgcolor="white" class="Normal"> <p><span style='"HYPERLINK \0022http\:\/\/deepthought\.lite\.msu\.edu\/res\/msu\/kashy\/Testing\/randomlabel\/atwood3T2M\.problem\0022 \\t \0022_blank\0022"'><span
1378:
1379: class=MsoHyperlink><span style='color:blue'>Atwood Machine</span></span></span>
1380:
1381: </p></td>
1382:
1383: <td width=298 bgcolor="white" class="Normal"> <p>/res/msu/kashy/Testing/randomlabel/atwood3T2M.problem
1384:
1385: </p></td>
1386:
1387: <td width=77 class="Normal"> <p> <img width=63 height=23
1388:
1389: src="Session%20Tw2_files/image112.png" v:shapes="_x0000_i1062"> </p></td>
1390:
1391: </tr>
1392:
1393: <tr>
1394:
1395: <td width=15 class="Normal"> <p>8 </p></td>
1396:
1397: <td width=83 bgcolor="white" class="Normal"> <p><span style='"HYPERLINK \0022http\:\/\/deepthought\.lite\.msu\.edu\/res\/msu\/physicslib\/msuphysicslib\/10_Motion_W_Friction\/msu-prob32\.problem\0022 \\t \0022_blank\0022"'><span
1398:
1399: class=MsoHyperlink><span style='color:blue'>Sliding mass concepts</span></span></span>
1400:
1401: </p></td>
1402:
1403: <td width=298 bgcolor="white" class="Normal"> <p>/res/msu/physicslib/msuphysicslib/10_Motion_W_Friction/msu-prob32.problem
1404:
1405: </p></td>
1406:
1407: <td width=77 class="Normal"> <p> <img width=59 height=23
1408:
1409: src="Session%20Tw2_files/image115.png" v:shapes="_x0000_i1063"> </p></td>
1410:
1411: </tr>
1412:
1413: <tr>
1414:
1415: <td width=15 class="Normal"> <p>9 </p></td>
1416:
1417: <td width=83 bgcolor="white" class="Normal"> <p><span style='"HYPERLINK \0022http\:\/\/deepthought\.lite\.msu\.edu\/res\/msu\/physicslib\/msuphysicslib\/12_Work_Power_Energy\/msu-prob27\.problem\0022 \\t \0022_blank\0022"'><span
1418:
1419: class=MsoHyperlink><span style='color:blue'>Work, Power, Energy Concepts</span></span></span>
1420:
1421: </p></td>
1422:
1423: <td width=298 bgcolor="white" class="Normal"> <p>/res/msu/physicslib/msuphysicslib/12_Work_Power_Energy/msu-prob27.problem
1424:
1425: </p></td>
1426:
1427: <td width=77 class="Normal"> <p> <img width=68 height=23
1428:
1429: src="Session%20Tw2_files/image118.png" v:shapes="_x0000_i1064"> </p></td>
1430:
1431: </tr>
1432:
1433: <tr>
1434:
1435: <td width=15 class="Normal"> <p>10 </p></td>
1436:
1437: <td width=83 bgcolor="white" class="Normal"> <p><span style='"HYPERLINK \0022http\:\/\/deepthought\.lite\.msu\.edu\/res\/msu\/physicslib\/msuphysicslib\/13_EnergyConservation\/msu-prob32\.problem\0022 \\t \0022_blank\0022"'><span
1438:
1439: class=MsoHyperlink><span style='color:blue'>Bead on a Wire</span></span></span>
1440:
1441: </p></td>
1442:
1443: <td width=298 bgcolor="white" class="Normal"> <p>/res/msu/physicslib/msuphysicslib/13_EnergyConservation/msu-prob32.problem
1444:
1445: </p></td>
1446:
1447: <td width=77 class="Normal"> <p> <img width=63 height=23
1448:
1449: src="Session%20Tw2_files/image121.png" v:shapes="_x0000_i1065"> </p></td>
1450:
1451: </tr>
1452:
1453: <tr>
1454:
1455: <td width=15 class="Normal"> <p>11 </p></td>
1456:
1457: <td width=83 bgcolor="white" class="Normal"> <p><span style='"HYPERLINK \0022http\:\/\/deepthought\.lite\.msu\.edu\/res\/msu\/physicslib\/msuphysicslib\/20_Rot2_E_Trq_Accel\/msu-prob23\.problem\0022 \\t \0022_blank\0022"'><span
1458:
1459: class=MsoHyperlink><span style='color:blue'>Atwood Machine</span></span></span>
1460:
1461: </p></td>
1462:
1463: <td width=298 bgcolor="white" class="Normal"> <p>/res/msu/physicslib/msuphysicslib/20_Rot2_E_Trq_Accel/msu-prob23.problem
1464:
1465: </p></td>
1466:
1467: <td width=77 class="Normal"> <p> <img width=63 height=23
1468:
1469: src="Session%20Tw2_files/image124.png" v:shapes="_x0000_i1066"> </p></td>
1470:
1471: </tr>
1472:
1473: <tr>
1474:
1475: <td width=15 class="Normal"> <p>12 </p></td>
1476:
1477: <td width=83 bgcolor="white" class="Normal"> <p><span style='"HYPERLINK \0022http\:\/\/deepthought\.lite\.msu\.edu\/res\/msu\/physicslib\/msuphysicslib\/21_Rot3_AngMom_Roll\/msu-prob38\.problem\0022 \\t \0022_blank\0022"'><span
1478:
1479: class=MsoHyperlink><span style='color:blue'>Flinstone Bowling</span></span></span>
1480:
1481: </p></td>
1482:
1483: <td width=298 bgcolor="white" class="Normal"> <p>/res/msu/physicslib/msuphysicslib/21_Rot3_AngMom_Roll/msu-prob38.problem
1484:
1485: </p></td>
1486:
1487: <td width=77 class="Normal"> <p> <img width=63 height=23
1488:
1489: src="Session%20Tw2_files/image127.png" v:shapes="_x0000_i1067"> </p></td>
1490:
1491: </tr>
1492:
1493: <tr>
1494:
1495: <td width=15 class="Normal"> <p>13 </p></td>
1496:
1497: <td width=83 bgcolor="white" class="Normal"> <p><span style='"HYPERLINK \0022http\:\/\/deepthought\.lite\.msu\.edu\/res\/msu\/physicslib\/msuphysicslib\/32_Fluids1_Pascal_Arch\/msu-prob12\.problem\0022 \\t \0022_blank\0022"'><span
1498:
1499: class=MsoHyperlink><span style='color:blue'>Boat on Pond</span></span></span>
1500:
1501: </p></td>
1502:
1503: <td width=298 bgcolor="white" class="Normal"> <p>/res/msu/physicslib/msuphysicslib/32_Fluids1_Pascal_Arch/msu-prob12.problem
1504:
1505: </p></td>
1506:
1507: <td width=77 class="Normal"> <p> <img width=68 height=23
1508:
1509: src="Session%20Tw2_files/image130.png" v:shapes="_x0000_i1068"> </p></td>
1510:
1511: </tr>
1512:
1513: <tr>
1514:
1515: <td width=15 class="Normal"> </td>
1516:
1517: <td width=83 bgcolor="white" class="Normal"> <p align=center style='text-align:center'>É</p></td>
1518:
1519: <td width=298 bgcolor="white" class="Normal"> <p align=center style='text-align:center'>É</p></td>
1520:
1521: <td width=77 class="Normal"> <p align=center style='text-align:center'>É</p></td>
1522:
1523: </tr>
1524:
1525: </table>
1526:
1527: <p><span style='font-size:11.0pt'><b>Fig. 3.2.5</b></span><span
1528:
1529: style='font-size:11.0pt'>: Option response problems in course PHY183 SS02</span></p>
1530:
1531: <p><b>Fig. 3.2.5</b><span style='font-weight:normal'> includes a table, which
1532:
1533: shows the title of every option response problem in the first column. This title
1534:
1535: has a link to the original html page of the problem. In the second column
1536:
1537: the source address of the problem is shown. Third column of this table includes
1538:
1539: a button to analyze the studentsÕ data on this particular option response problem.
1540:
1541: When this button is clicked, all data about this problem is <i>restored</i></span>,
1542:
1543: for every student. Different versions of studentsÕ submissions are evaluated.
1544:
1545: The results are presented in a graphical chart as well as a numerical table.
1546:
1547: For example, if we select the analysis of <b>/res/msu/kashy/Testing/randomlabel/atwood3T2M.problem</b></p>
1548:
1549: <p> <span style='position:
1550:
1551: relative;z-index:0'><span style='position:absolute;left:-37px;top:-32px;
1552:
1553: width:248px;height:174px'> <table cellpadding=0 cellspacing=0> <tr> <td width=249 height=174 align=left valign=top bgcolor=white class="Normal"
1554:
1555: style='border:.75pt solid black;vertical-align:top;background:white'><span
1556:
1557: style='position:absolute;z-index:1'>
1558:
1559: <table cellpadding=0 cellspacing=0 width="100%">
1560:
1561: <tr>
1562:
1563: <td class="Normal"> <div v:shape="_x0000_s1026" style='padding:3.6pt 7.2pt 3.6pt 7.2pt'
1564:
1565: class=shape>
1566:
1567: <p class=FirstParagraph><span lang=PT-BR
1568:
1569: style='font-size:9.0pt'>A frictionless, massless pulley is attached to the
1570:
1571: ceiling, in a gravity field g. Mass Ma is greater than mass Mb. The
1572:
1573: tensions Tx,Ty, Tz, and the constant g are magnitudes. (For each,
1574:
1575: select: Greater than, Less than, Equal to, True, or False) </span></p>
1576:
1577: <p class=FirstParagraph><span lang=PT-BR style='font-size:9.0pt'> <img width=96 height=114
1578:
1579: src="Session%20Tw2_files/image132.jpg" v:shapes="_x0000_i1069"> <img width=125 height=120
1580:
1581: src="Session%20Tw2_files/image135.png" v:shapes="_x0000_i1070"> </span></p>
1582:
1583: </div></td>
1584:
1585: </tr>
1586:
1587: </table>
1588:
1589: </span></td></tr> </table>
1590:
1591: <p></p>
1592:
1593: <br clear=all>
1594:
1595: <p align=right style='text-align:right'> <span style='position:
1596:
1597: absolute;z-index:1;left:0px;margin-left:229px;margin-top:97px;width:235px;
1598:
1599: height:40px'> <table cellpadding=0 cellspacing=0> <tr> <td width=236 height=40 align=left valign=top bgcolor=white class="Normal" style='border:
1600:
1601: .75pt solid white;vertical-align:top;background:white'><span
1602:
1603: style='position:absolute;left:0pt;z-index:3'>
1604:
1605: <table cellpadding=0 cellspacing=0 width="100%">
1606:
1607: <tr>
1608:
1609: <td class="Normal"> <div v:shape="_x0000_s1028" style='padding:3.6pt 7.2pt 3.6pt 7.2pt'
1610:
1611: class=shape>
1612:
1613: <p><span style='font-size:9.0pt'><b>Fig. 3.2.7</b></span><span
1614:
1615: style='font-size:9.0pt'>: Graphical chart of student tries for </span></p>
1616:
1617: <p><span style='font-size:9.0pt'>
1618:
1619: Atwood Machine Problem
1620:
1621: according </span></p>
1622:
1623: <p><span style='font-size:9.0pt'>
1624:
1625: to every concept in 1 interval time.</span></p>
1626:
1627: </div></td>
1628:
1629: </tr>
1630:
1631: </table>
1632:
1633: </span></td></tr> </table> <img width=203 height=150
1634:
1635: src="Session%20Tw2_files/image137.png" v:shapes="_x0000_i1071">
1636:
1637: <p></p>
1638:
1639: <p><span style='font-size:9.0pt'><b>Fig. 3.2.6</b></span><span
1640:
1641: style='font-size:9.0pt'>: Atwood Machine option response problem in HW3<b> </b></span></p>
1642:
1643: <p><span style='font-size:11.0pt'>In addition, the data of studentsÕ tries
1644:
1645: are shown in a table as you see in <b>Fig. 3.2.8</b></span><span
1646:
1647: style='font-size:11.0pt'>. In the last row of the table you can see the time interval
1648:
1649: of this data and the overall correct and wrong answers separately. If an
1650:
1651: instructor wants to see the studentsÕ tries in different time intervals,
1652:
1653: he/she could set the number of intervals from 1 to 7 time intervals, and
1654:
1655: then recompute the analysis. </span></p>
1656:
1657: <table border=1 cellspacing=0 cellpadding=0>
1658:
1659: <tr>
1660:
1661: <td width=10 class="Normal"> <p align=center style='text-align:center'><b>#
1662:
1663: </b></p></td>
1664:
1665: <td width=357 class="Normal"> <p align=center style='text-align:center'><b>Concept
1666:
1667: </b></p></td>
1668:
1669: <td width=38 class="Normal"> <p align=center style='text-align:center'><b>Correct
1670:
1671: </b></p></td>
1672:
1673: <td width=35 class="Normal"> <p align=center style='text-align:center'><b>Wrong
1674:
1675: </b></p></td>
1676:
1677: </tr>
1678:
1679: <tr>
1680:
1681: <td width=10 class="Normal"> <p>1</p></td>
1682:
1683: <td width=357 bgcolor="white" class="Normal"> <p>Two masses have same
1684:
1685: acceleration if the two the string does not stretch. </p></td>
1686:
1687: <td width=38 bgcolor="white" class="Normal"> <p>1342 </p></td>
1688:
1689: <td width=35 bgcolor="white" class="Normal"> <p>433 </p></td>
1690:
1691: </tr>
1692:
1693: <tr>
1694:
1695: <td width=10 class="Normal"> <p>2</p></td>
1696:
1697: <td width=357 bgcolor="white" class="Normal"> <p>Weight of the two masses
1698:
1699: is greater than the tension of the string attached to the ceiling.
1700:
1701: </p></td>
1702:
1703: <td width=38 bgcolor="white" class="Normal"> <p>585 </p></td>
1704:
1705: <td width=35 bgcolor="white" class="Normal"> <p>1190 </p></td>
1706:
1707: </tr>
1708:
1709: <tr>
1710:
1711: <td width=10 class="Normal"> <p>3</p></td>
1712:
1713: <td width=357 bgcolor="white" class="Normal"> <p>The top tension is equals
1714:
1715: the two bottom tensions. (massless pulley) </p></td>
1716:
1717: <td width=38 bgcolor="white" class="Normal"> <p>1263 </p></td>
1718:
1719: <td width=35 bgcolor="white" class="Normal"> <p>512 </p></td>
1720:
1721: </tr>
1722:
1723: <tr>
1724:
1725: <td width=10 class="Normal"> <p>4</p></td>
1726:
1727: <td width=357 bgcolor="white" class="Normal"> <p>Tension holding the two
1728:
1729: masses are equal if mass of pulley=0 </p></td>
1730:
1731: <td width=38 bgcolor="white" class="Normal"> <p>1087 </p></td>
1732:
1733: <td width=35 bgcolor="white" class="Normal"> <p>688 </p></td>
1734:
1735: </tr>
1736:
1737: <tr>
1738:
1739: <td width=10 class="Normal"> <p>5</p></td>
1740:
1741: <td width=357 bgcolor="white" class="Normal"> <p>Sub-System accelerates
1742:
1743: upwards or downwards accordingly </p></td>
1744:
1745: <td width=38 bgcolor="white" class="Normal"> <p>757 </p></td>
1746:
1747: <td width=35 bgcolor="white" class="Normal"> <p>1018 </p></td>
1748:
1749: </tr>
1750:
1751: <tr>
1752:
1753: <td width=10 class="Normal"> <p>6</p></td>
1754:
1755: <td width=357 bgcolor="white" class="Normal"> <p>Center of mass accelerates
1756:
1757: downward </p></td>
1758:
1759: <td width=38 bgcolor="white" class="Normal"> <p>1354 </p></td>
1760:
1761: <td width=35 bgcolor="white" class="Normal"> <p>421 </p></td>
1762:
1763: </tr>
1764:
1765: <tr>
1766:
1767: <td width=10 class="Normal"> </td>
1768:
1769: <td width=357 class="Normal"> <p><b>From:[Thu Jan 24 00:46:22 2002] To:
1770:
1771: [Mon Feb 4 23:59:59 2002]</b></p></td>
1772:
1773: <td width=38 class="Normal"> <p>6388</p></td>
1774:
1775: <td width=35 class="Normal"> <p>4245</p></td>
1776:
1777: </tr>
1778:
1779: </table>
1780:
1781: <p><span style='font-size:11.0pt'><b>Fig. 3.2.8</b></span><span
1782:
1783: style='font-size:11.0pt'>: Table of student tries for Atwood Machine Problem according
1784:
1785: to every concept in one time interval.</span></p>
1786:
1787: <p> <span
1788:
1789: style='position:relative;z-index:2'><span style='position:
1790:
1791: absolute;left:-109px;top:-166px;width:341px;height:24px'> <img width=341
1792:
1793: height=24 src="Session%20Tw2_files/image138.png" v:shapes="_x0000_s1027"> <img width=203 height=150
1794:
1795: src="Session%20Tw2_files/image140.png" v:shapes="_x0000_i1072"> <img width=203 height=150
1796:
1797: src="Session%20Tw2_files/image142.png" v:shapes="_x0000_i1073">
1798:
1799: <p></p>
1800:
1801: <table border=1 cellspacing=0 cellpadding=0>
1802:
1803: <tr>
1804:
1805: <td width=10 class="Normal"> <p align=center style='text-align:center'><b>#
1806:
1807: </b></p></td>
1808:
1809: <td width=357 class="Normal"> <p align=center style='text-align:center'><b>Concept
1810:
1811: </b></p></td>
1812:
1813: <td width=38 class="Normal"> <p align=center style='text-align:center'><b>Correct
1814:
1815: </b></p></td>
1816:
1817: <td width=35 class="Normal"> <p align=center style='text-align:center'><b>Wrong
1818:
1819: </b></p></td>
1820:
1821: </tr>
1822:
1823: <tr>
1824:
1825: <td width=10 class="Normal"> <p>1</p></td>
1826:
1827: <td width=357 bgcolor="white" class="Normal"> <p>Two masses have same
1828:
1829: acceleration if the two the string does not stretch. </p></td>
1830:
1831: <td width=38 bgcolor="white" class="Normal"> <p>124 </p></td>
1832:
1833: <td width=35 bgcolor="white" class="Normal"> <p>98 </p></td>
1834:
1835: </tr>
1836:
1837: <tr>
1838:
1839: <td width=10 class="Normal"> <p>2</p></td>
1840:
1841: <td width=357 bgcolor="white" class="Normal"> <p>Weight of the two masses
1842:
1843: is greater than the tension of the string attached to the ceiling.
1844:
1845: </p></td>
1846:
1847: <td width=38 bgcolor="white" class="Normal"> <p>44 </p></td>
1848:
1849: <td width=35 bgcolor="white" class="Normal"> <p>178 </p></td>
1850:
1851: </tr>
1852:
1853: <tr>
1854:
1855: <td width=10 class="Normal"> <p>3</p></td>
1856:
1857: <td width=357 bgcolor="white" class="Normal"> <p>The top tension is
1858:
1859: equals the two bottom tensions. (massless pulley) </p></td>
1860:
1861: <td width=38 bgcolor="white" class="Normal"> <p>142 </p></td>
1862:
1863: <td width=35 bgcolor="white" class="Normal"> <p>80 </p></td>
1864:
1865: </tr>
1866:
1867: <tr>
1868:
1869: <td width=10 class="Normal"> <p>4</p></td>
1870:
1871: <td width=357 bgcolor="white" class="Normal"> <p>Tension holding the
1872:
1873: two masses are equal if mass of pulley=0 </p></td>
1874:
1875: <td width=38 bgcolor="white" class="Normal"> <p>125 </p></td>
1876:
1877: <td width=35 bgcolor="white" class="Normal"> <p>97 </p></td>
1878:
1879: </tr>
1880:
1881: <tr>
1882:
1883: <td width=10 class="Normal"> <p>5</p></td>
1884:
1885: <td width=357 bgcolor="white" class="Normal"> <p>Sub-System accelerates
1886:
1887: upwards or downwards accordingly </p></td>
1888:
1889: <td width=38 bgcolor="white" class="Normal"> <p>64 </p></td>
1890:
1891: <td width=35 bgcolor="white" class="Normal"> <p>158 </p></td>
1892:
1893: </tr>
1894:
1895: <tr>
1896:
1897: <td width=10 class="Normal"> <p>6</p></td>
1898:
1899: <td width=357 bgcolor="white" class="Normal"> <p>Center of mass accelerates
1900:
1901: downward </p></td>
1902:
1903: <td width=38 bgcolor="white" class="Normal"> <p>151 </p></td>
1904:
1905: <td width=35 bgcolor="white" class="Normal"> <p>71 </p></td>
1906:
1907: </tr>
1908:
1909: <tr>
1910:
1911: <td width=10 class="Normal"> </td>
1912:
1913: <td width=357 class="Normal"> <p><b>From:[Thu Jan 24 00:46:22 2002]
1914:
1915: To: [Wed Jan 30 00:23:10 2002]</b></p></td>
1916:
1917: <td width=38 class="Normal"> <p>650</p></td>
1918:
1919: <td width=35 class="Normal"> <p>682</p></td>
1920:
1921: </tr>
1922:
1923: </table>
1924:
1925: <table border=1 cellspacing=0 cellpadding=0>
1926:
1927: <tr>
1928:
1929: <td width=10 class="Normal"> <p align=center style='text-align:center'><b>#
1930:
1931: </b></p></td>
1932:
1933: <td width=357 class="Normal"> <p align=center style='text-align:center'><b>Concept
1934:
1935: </b></p></td>
1936:
1937: <td width=38 class="Normal"> <p align=center style='text-align:center'><b>Correct
1938:
1939: </b></p></td>
1940:
1941: <td width=35 class="Normal"> <p align=center style='text-align:center'><b>Wrong
1942:
1943: </b></p></td>
1944:
1945: </tr>
1946:
1947: <tr>
1948:
1949: <td width=10 class="Normal"> <p>1</p></td>
1950:
1951: <td width=357 bgcolor="white" class="Normal"> <p>Two masses have same
1952:
1953: acceleration if the two the string does not stretch. </p></td>
1954:
1955: <td width=38 bgcolor="white" class="Normal"> <p>1218 </p></td>
1956:
1957: <td width=35 bgcolor="white" class="Normal"> <p>335 </p></td>
1958:
1959: </tr>
1960:
1961: <tr>
1962:
1963: <td width=10 class="Normal"> <p>2</p></td>
1964:
1965: <td width=357 bgcolor="white" class="Normal"> <p>Weight of the two masses
1966:
1967: is greater than the tension of the string attached to the ceiling.
1968:
1969: </p></td>
1970:
1971: <td width=38 bgcolor="white" class="Normal"> <p>541 </p></td>
1972:
1973: <td width=35 bgcolor="white" class="Normal"> <p>1012 </p></td>
1974:
1975: </tr>
1976:
1977: <tr>
1978:
1979: <td width=10 class="Normal"> <p>3</p></td>
1980:
1981: <td width=357 bgcolor="white" class="Normal"> <p>The top tension is
1982:
1983: equals the two bottom tensions. (massless pulley) </p></td>
1984:
1985: <td width=38 bgcolor="white" class="Normal"> <p>1121 </p></td>
1986:
1987: <td width=35 bgcolor="white" class="Normal"> <p>432 </p></td>
1988:
1989: </tr>
1990:
1991: <tr>
1992:
1993: <td width=10 class="Normal"> <p>4</p></td>
1994:
1995: <td width=357 bgcolor="white" class="Normal"> <p>Tension holding the
1996:
1997: two masses are equal if mass of pulley=0 </p></td>
1998:
1999: <td width=38 bgcolor="white" class="Normal"> <p>962 </p></td>
2000:
2001: <td width=35 bgcolor="white" class="Normal"> <p>591 </p></td>
2002:
2003: </tr>
2004:
2005: <tr>
2006:
2007: <td width=10 class="Normal"> <p>5</p></td>
2008:
2009: <td width=357 bgcolor="white" class="Normal"> <p>Sub-System accelerates
2010:
2011: upwards or downwards accordingly </p></td>
2012:
2013: <td width=38 bgcolor="white" class="Normal"> <p>693 </p></td>
2014:
2015: <td width=35 bgcolor="white" class="Normal"> <p>860 </p></td>
2016:
2017: </tr>
2018:
2019: <tr>
2020:
2021: <td width=10 class="Normal"> <p>6</p></td>
2022:
2023: <td width=357 bgcolor="white" class="Normal"> <p>Center of mass accelerates
2024:
2025: downward </p></td>
2026:
2027: <td width=38 bgcolor="white" class="Normal"> <p>1203 </p></td>
2028:
2029: <td width=35 bgcolor="white" class="Normal"> <p>350 </p></td>
2030:
2031: </tr>
2032:
2033: <tr>
2034:
2035: <td width=10 class="Normal"> </td>
2036:
2037: <td width=357 class="Normal"> <p><b>From:[Wed Jan 30 00:23:11 2002]
2038:
2039: To: [Mon Feb 4 23:59:59 2002]</b></p></td>
2040:
2041: <td width=38 class="Normal"> <p>5738</p></td>
2042:
2043: <td width=35 class="Normal"> <p>3563</p></td>
2044:
2045: </tr>
2046:
2047: </table>
2048:
2049: <p><span style='font-size:11.0pt'><b>Fig. 3.2.9</b></span><span
2050:
2051: style='font-size:11.0pt'>: Table of student tries for Atwood Machine Problem according
2052:
2053: to every concept in 2 times interval.</span></p>
2054:
2055: <p>In <b>Fig. 3.2.9</b><span style='font-weight:normal'>, number of studentsÕ
2056:
2057: tries tables and the graphical chart are shown in 2 different time intervals.
2058:
2059: An instructor would be able to check whether the students have more wrong
2060:
2061: answers during the first days of opening the homework set, and how many
2062:
2063: students have tried during the first or the second interval. Since the
2064:
2065: problems are individualized he/she might be able to see how many students
2066:
2067: have tried to solve the problem after communicating with each other and
2068:
2069: understanding the concept. In Fig. 3.2. 10 the charts and tables
2070:
2071: of studentsÕ tries are shown in 3 time intervals. So if the homework should
2072:
2073: be done in one week, an instructor would be able to observe the distribution
2074:
2075: of studentsÕ tries every day separately after choosing the 7 time intervals.</span></p>
2076:
2077: <p> <img width=151 height=150
2078:
2079: src="Session%20Tw2_files/image144.png" v:shapes="_x0000_i1074"> <img width=151 height=150
2080:
2081: src="Session%20Tw2_files/image146.png" v:shapes="_x0000_i1075"> <img width=149 height=150
2082:
2083: src="Session%20Tw2_files/image148.png" v:shapes="_x0000_i1076"> </p>
2084:
2085: <table border=1 cellspacing=0 cellpadding=0>
2086:
2087: <tr>
2088:
2089: <td width=10 class="Normal"> <p align=center style='text-align:center'><b>#
2090:
2091: </b></p></td>
2092:
2093: <td width=357 class="Normal"> <p align=center style='text-align:center'><b>Concept
2094:
2095: </b></p></td>
2096:
2097: <td width=38 class="Normal"> <p align=center style='text-align:center'><b>Correct
2098:
2099: </b></p></td>
2100:
2101: <td width=35 class="Normal"> <p align=center style='text-align:center'><b>Wrong
2102:
2103: </b></p></td>
2104:
2105: </tr>
2106:
2107: <tr>
2108:
2109: <td width=10 class="Normal"> <p>1</p></td>
2110:
2111: <td width=357 bgcolor="white" class="Normal"> <p>Two masses have same
2112:
2113: acceleration if the two the string does not stretch. </p></td>
2114:
2115: <td width=38 bgcolor="white" class="Normal"> <p>31 </p></td>
2116:
2117: <td width=35 bgcolor="white" class="Normal"> <p>30 </p></td>
2118:
2119: </tr>
2120:
2121: <tr>
2122:
2123: <td width=10 class="Normal"> <p>2</p></td>
2124:
2125: <td width=357 bgcolor="white" class="Normal"> <p>Weight of the two masses
2126:
2127: is greater than the tension of the string attached to the ceiling.
2128:
2129: </p></td>
2130:
2131: <td width=38 bgcolor="white" class="Normal"> <p>8 </p></td>
2132:
2133: <td width=35 bgcolor="white" class="Normal"> <p>53 </p></td>
2134:
2135: </tr>
2136:
2137: <tr>
2138:
2139: <td width=10 class="Normal"> <p>3</p></td>
2140:
2141: <td width=357 bgcolor="white" class="Normal"> <p>The top tension is
2142:
2143: equals the two bottom tensions. (massless pulley) </p></td>
2144:
2145: <td width=38 bgcolor="white" class="Normal"> <p>44 </p></td>
2146:
2147: <td width=35 bgcolor="white" class="Normal"> <p>17 </p></td>
2148:
2149: </tr>
2150:
2151: <tr>
2152:
2153: <td width=10 class="Normal"> <p>4</p></td>
2154:
2155: <td width=357 bgcolor="white" class="Normal"> <p>Tension holding the
2156:
2157: two masses are equal if mass of pulley=0 </p></td>
2158:
2159: <td width=38 bgcolor="white" class="Normal"> <p>32 </p></td>
2160:
2161: <td width=35 bgcolor="white" class="Normal"> <p>29 </p></td>
2162:
2163: </tr>
2164:
2165: <tr>
2166:
2167: <td width=10 class="Normal"> <p>5</p></td>
2168:
2169: <td width=357 bgcolor="white" class="Normal"> <p>Sub-System accelerates
2170:
2171: upwards or downwards accordingly </p></td>
2172:
2173: <td width=38 bgcolor="white" class="Normal"> <p>20 </p></td>
2174:
2175: <td width=35 bgcolor="white" class="Normal"> <p>41 </p></td>
2176:
2177: </tr>
2178:
2179: <tr>
2180:
2181: <td width=10 class="Normal"> <p>6</p></td>
2182:
2183: <td width=357 bgcolor="white" class="Normal"> <p>Center of mass accelerates
2184:
2185: downward </p></td>
2186:
2187: <td width=38 bgcolor="white" class="Normal"> <p>42 </p></td>
2188:
2189: <td width=35 bgcolor="white" class="Normal"> <p>19 </p></td>
2190:
2191: </tr>
2192:
2193: <tr>
2194:
2195: <td width=10 class="Normal"> </td>
2196:
2197: <td width=357 class="Normal"> <p><b>From:[Thu Jan 24 00:46:22 2002]
2198:
2199: To: [Mon Jan 28 00:30:53 2002]</b></p></td>
2200:
2201: <td width=38 class="Normal"> <p>177</p></td>
2202:
2203: <td width=35 class="Normal"> <p>189</p></td>
2204:
2205: </tr>
2206:
2207: </table>
2208:
2209: <table border=1 cellspacing=0 cellpadding=0>
2210:
2211: <tr>
2212:
2213: <td width=10 class="Normal"> <p align=center style='text-align:center'><b>#
2214:
2215: </b></p></td>
2216:
2217: <td width=357 class="Normal"> <p align=center style='text-align:center'><b>Concept
2218:
2219: </b></p></td>
2220:
2221: <td width=38 class="Normal"> <p align=center style='text-align:center'><b>Correct
2222:
2223: </b></p></td>
2224:
2225: <td width=35 class="Normal"> <p align=center style='text-align:center'><b>Wrong
2226:
2227: </b></p></td>
2228:
2229: </tr>
2230:
2231: <tr>
2232:
2233: <td width=10 class="Normal"> <p>1</p></td>
2234:
2235: <td width=357 bgcolor="white" class="Normal"> <p>Two masses have same
2236:
2237: acceleration if the two the string does not stretch. </p></td>
2238:
2239: <td width=38 bgcolor="white" class="Normal"> <p>692 </p></td>
2240:
2241: <td width=35 bgcolor="white" class="Normal"> <p>257 </p></td>
2242:
2243: </tr>
2244:
2245: <tr>
2246:
2247: <td width=10 class="Normal"> <p>2</p></td>
2248:
2249: <td width=357 bgcolor="white" class="Normal"> <p>Weight of the two masses
2250:
2251: is greater than the tension of the string attached to the ceiling.
2252:
2253: </p></td>
2254:
2255: <td width=38 bgcolor="white" class="Normal"> <p>321 </p></td>
2256:
2257: <td width=35 bgcolor="white" class="Normal"> <p>628 </p></td>
2258:
2259: </tr>
2260:
2261: <tr>
2262:
2263: <td width=10 class="Normal"> <p>3</p></td>
2264:
2265: <td width=357 bgcolor="white" class="Normal"> <p>The top tension is
2266:
2267: equals the two bottom tensions. (massless pulley) </p></td>
2268:
2269: <td width=38 bgcolor="white" class="Normal"> <p>690 </p></td>
2270:
2271: <td width=35 bgcolor="white" class="Normal"> <p>259 </p></td>
2272:
2273: </tr>
2274:
2275: <tr>
2276:
2277: <td width=10 class="Normal"> <p>4</p></td>
2278:
2279: <td width=357 bgcolor="white" class="Normal"> <p>Tension holding the
2280:
2281: two masses are equal if mass of pulley=0 </p></td>
2282:
2283: <td width=38 bgcolor="white" class="Normal"> <p>590 </p></td>
2284:
2285: <td width=35 bgcolor="white" class="Normal"> <p>359 </p></td>
2286:
2287: </tr>
2288:
2289: <tr>
2290:
2291: <td width=10 class="Normal"> <p>5</p></td>
2292:
2293: <td width=357 bgcolor="white" class="Normal"> <p>Sub-System accelerates
2294:
2295: upwards or downwards accordingly </p></td>
2296:
2297: <td width=38 bgcolor="white" class="Normal"> <p>399 </p></td>
2298:
2299: <td width=35 bgcolor="white" class="Normal"> <p>550 </p></td>
2300:
2301: </tr>
2302:
2303: <tr>
2304:
2305: <td width=10 class="Normal"> <p>6</p></td>
2306:
2307: <td width=357 bgcolor="white" class="Normal"> <p>Center of mass accelerates
2308:
2309: downward </p></td>
2310:
2311: <td width=38 bgcolor="white" class="Normal"> <p>703 </p></td>
2312:
2313: <td width=35 bgcolor="white" class="Normal"> <p>246 </p></td>
2314:
2315: </tr>
2316:
2317: <tr>
2318:
2319: <td width=10 class="Normal"> </td>
2320:
2321: <td width=357 class="Normal"> <p><b>From:[Mon Jan 28 00:30:54 2002]
2322:
2323: To: [Fri Feb 1 00:15:25 2002]</b></p></td>
2324:
2325: <td width=38 class="Normal"> <p>3395</p></td>
2326:
2327: <td width=35 class="Normal"> <p>2281</p></td>
2328:
2329: </tr>
2330:
2331: </table>
2332:
2333: <table border=1 cellspacing=0 cellpadding=0>
2334:
2335: <tr>
2336:
2337: <td width=10 class="Normal"> <p align=center style='text-align:center'><b>#
2338:
2339: </b></p></td>
2340:
2341: <td width=357 class="Normal"> <p align=center style='text-align:center'><b>Concept
2342:
2343: </b></p></td>
2344:
2345: <td width=38 class="Normal"> <p align=center style='text-align:center'><b>Correct
2346:
2347: </b></p></td>
2348:
2349: <td width=35 class="Normal"> <p align=center style='text-align:center'><b>Wrong
2350:
2351: </b></p></td>
2352:
2353: </tr>
2354:
2355: <tr>
2356:
2357: <td width=10 class="Normal"> <p>1</p></td>
2358:
2359: <td width=357 bgcolor="white" class="Normal"> <p>Two masses have same
2360:
2361: acceleration if the two the string does not stretch. </p></td>
2362:
2363: <td width=38 bgcolor="white" class="Normal"> <p>619 </p></td>
2364:
2365: <td width=35 bgcolor="white" class="Normal"> <p>147 </p></td>
2366:
2367: </tr>
2368:
2369: <tr>
2370:
2371: <td width=10 class="Normal"> <p>2</p></td>
2372:
2373: <td width=357 bgcolor="white" class="Normal"> <p>Weight of the two masses
2374:
2375: is greater than the tension of the string attached to the ceiling.
2376:
2377: </p></td>
2378:
2379: <td width=38 bgcolor="white" class="Normal"> <p>256 </p></td>
2380:
2381: <td width=35 bgcolor="white" class="Normal"> <p>510 </p></td>
2382:
2383: </tr>
2384:
2385: <tr>
2386:
2387: <td width=10 class="Normal"> <p>3</p></td>
2388:
2389: <td width=357 bgcolor="white" class="Normal"> <p>The top tension is
2390:
2391: equals the two bottom tensions. (massless pulley) </p></td>
2392:
2393: <td width=38 bgcolor="white" class="Normal"> <p>529 </p></td>
2394:
2395: <td width=35 bgcolor="white" class="Normal"> <p>237 </p></td>
2396:
2397: </tr>
2398:
2399: <tr>
2400:
2401: <td width=10 class="Normal"> <p>4</p></td>
2402:
2403: <td width=357 bgcolor="white" class="Normal"> <p>Tension holding the
2404:
2405: two masses are equal if mass of pulley=0 </p></td>
2406:
2407: <td width=38 bgcolor="white" class="Normal"> <p>465 </p></td>
2408:
2409: <td width=35 bgcolor="white" class="Normal"> <p>301 </p></td>
2410:
2411: </tr>
2412:
2413: <tr>
2414:
2415: <td width=10 class="Normal"> <p>5</p></td>
2416:
2417: <td width=357 bgcolor="white" class="Normal"> <p>Sub-System accelerates
2418:
2419: upwards or downwards accordingly </p></td>
2420:
2421: <td width=38 bgcolor="white" class="Normal"> <p>338 </p></td>
2422:
2423: <td width=35 bgcolor="white" class="Normal"> <p>428 </p></td>
2424:
2425: </tr>
2426:
2427: <tr>
2428:
2429: <td width=10 class="Normal"> <p>6</p></td>
2430:
2431: <td width=357 bgcolor="white" class="Normal"> <p>Center of mass accelerates
2432:
2433: downward </p></td>
2434:
2435: <td width=38 bgcolor="white" class="Normal"> <p>609 </p></td>
2436:
2437: <td width=35 bgcolor="white" class="Normal"> <p>157 </p></td>
2438:
2439: </tr>
2440:
2441: <tr>
2442:
2443: <td width=10 class="Normal"> </td>
2444:
2445: <td width=357 class="Normal"> <p><b>From:[Fri Feb 1 00:15:26 2002] To:
2446:
2447: [Mon Feb 4 23:59:59 2002]</b></p></td>
2448:
2449: <td width=38 class="Normal"> <p>2816</p></td>
2450:
2451: <td width=35 class="Normal"> <p>1775</p></td>
2452:
2453: </tr>
2454:
2455: </table>
2456:
2457: <p><b>Fig. 3.2. 10</b><span style='font-weight:normal'>: Table of student
2458:
2459: tries for Atwood Machine Problem according to every concept in 3 times
2460:
2461: interval.</span></p>
2462:
2463: <h3><a name="_Toc421867142">Student Assessment</a></h3>
2464:
2465: <p class=MsoBodyText2><span style='font-size:11.0pt'>This option provides
2466:
2467: some reports about the current educational situation of every student
2468:
2469: as you see in <b>Fig. 3.2.11</b></span><span style='font-size:11.0pt'>.
2470:
2471: A ÔYÕ show that the student has solved the problem and ÔNÕ shows his/her
2472:
2473: failure. A Ô-Ô denotes a unattempted problem. The numbers in the
2474:
2475: right column show the total number of tries of the student in solving
2476:
2477: the corresponding problems.</span></p>
2478:
2479: <form>
2480:
2481: <div style='border:solid windowtext .5pt;padding:1.0pt 0in 1.0pt 4.0pt'>
2482:
2483: <p style='border:none;padding:0in;'>Total number of students : 263<br>
2484:
2485: <br>
2486:
2487: <img width=68 height=23
2488:
2489: src="Session%20Tw2_files/image151.png" v:shapes="_x0000_i1077"> <br>
2490:
2491: <b>Select Map </b><span style='font-weight:normal'>
2492:
2493: <img width=215 height=18
2494:
2495: src="Session%20Tw2_files/image154.png" v:shapes="_x0000_i1078"> <br>
2496:
2497: </span><b>Select Section</b><span style='font-weight:normal'> <img width=89 height=18
2498:
2499: src="Session%20Tw2_files/image157.png" v:shapes="_x0000_i1079"> <br>
2500:
2501: </span><b>Select Student</b><span style='font-weight:normal'> <img width=89 height=18
2502:
2503: src="Session%20Tw2_files/image160.png" v:shapes="_x0000_i1080"> <br>
2504:
2505: <br>
2506:
2507: </span></p>
2508:
2509: <p style='border:none;padding:0in;'> <img width=93 height=23
2510:
2511: src="Session%20Tw2_files/image163.png" v:shapes="_x0000_i1081"> </p>
2512:
2513: </div>
2514:
2515: <table border=1 cellspacing=0 cellpadding=0>
2516:
2517: <tr>
2518:
2519: <td width=21 class="Normal"> <p align=center style='text-align:center;line-height:150%'><b>#
2520:
2521: </b></p></td>
2522:
2523: <td width=177 class="Normal"> <p align=center style='text-align:center;line-height:150%'><b>Set
2524:
2525: Title </b></p></td>
2526:
2527: <td width=122 class="Normal"> <p align=center style='text-align:center;line-height:150%'><b>Results
2528:
2529: </b></p></td>
2530:
2531: <td width=153 class="Normal"> <p align=center style='text-align:center;line-height:150%'><b>Tries
2532:
2533: </b></p></td>
2534:
2535: </tr>
2536:
2537: <tr>
2538:
2539: <td width=21 class="Normal"> <p style='line-height:150%'>1 </p></td>
2540:
2541: <td width=177 class="Normal"> <p style='line-height:150%'>msu/mmp/phy183.sequence
2542:
2543: </p></td>
2544:
2545: <td width=122 class="Normal"> </td>
2546:
2547: <td width=153 class="Normal"> </td>
2548:
2549: </tr>
2550:
2551: <tr>
2552:
2553: <td width=21 class="Normal"> <p style='line-height:150%'>2 </p></td>
2554:
2555: <td width=177 class="Normal"> <p style='line-height:150%'>msu/mmp/kap1/calckap1.sequence
2556:
2557: </p></td>
2558:
2559: <td width=122 class="Normal"> <p style='line-height:150%'><span style='font-size:8.0pt'>YYYYYYYYYYYYY
2560:
2561: </span></p></td>
2562:
2563: <td width=153 class="Normal"> <p style='line-height:150%'>1,1,1,2,1,1,1,1,1,7,9,3,2</p></td>
2564:
2565: </tr>
2566:
2567: <tr>
2568:
2569: <td width=21 class="Normal"> <p style='line-height:150%'>3 </p></td>
2570:
2571: <td width=177 class="Normal"> <p style='line-height:150%'>msu/mmp/kap2/calckap2.sequence
2572:
2573: </p></td>
2574:
2575: <td width=122 class="Normal"> <p style='line-height:150%'><span style='font-size:8.0pt'>YYNYYYYNNYYYYYYYY
2576:
2577: </span></p></td>
2578:
2579: <td width=153 class="Normal"> <p style='line-height:150%'>10,1,0,1,1,2,1,4,5,1,1,1,3,2,1,1,1</p></td>
2580:
2581: </tr>
2582:
2583: <tr>
2584:
2585: <td width=21 class="Normal"> <p style='line-height:150%'>4 </p></td>
2586:
2587: <td width=177 class="Normal"> <p style='line-height:150%'>msu/mmp/kap3/calckap3.sequence
2588:
2589: </p></td>
2590:
2591: <td width=122 class="Normal"> <p style='line-height:150%'><span style='font-size:8.0pt'>YYYYYYYYNYYYYYYYYYY
2592:
2593: </span></p></td>
2594:
2595: <td width=153 class="Normal"> <p style='line-height:150%'>4,3,5,1,1,8,2,3,20,1,1,1,1,1,2,3,2,2,3</p></td>
2596:
2597: </tr>
2598:
2599: <tr>
2600:
2601: <td width=21 class="Normal"> <p style='line-height:150%'>5 </p></td>
2602:
2603: <td width=177 class="Normal"> <p style='line-height:150%'>msu/mmp/kap4/calckap4.sequence
2604:
2605: </p></td>
2606:
2607: <td width=122 class="Normal"> <p style='line-height:150%'><span style='font-size:8.0pt'>NYYYYYYYYYYYYYYY
2608:
2609: </span></p></td>
2610:
2611: <td width=153 class="Normal"> <p style='line-height:150%'>20,1,1,1,3,3,2,3,4,2,3,2,1,1,2,5</p></td>
2612:
2613: </tr>
2614:
2615: <tr>
2616:
2617: <td width=21 class="Normal"> <p style='line-height:150%'>6 </p></td>
2618:
2619: <td width=177 class="Normal"> <p style='line-height:150%'>msu/mmp/kap5/calckap5.sequence
2620:
2621: </p></td>
2622:
2623: <td width=122 class="Normal"> <p style='line-height:150%'><span style='font-size:8.0pt'>YYYYYYYYYYY-YY
2624:
2625: </span></p></td>
2626:
2627: <td width=153 class="Normal"> <p style='line-height:150%'>5,2,1,9,12,1,3,12,1,2,1,,1,3</p></td>
2628:
2629: </tr>
2630:
2631: <tr>
2632:
2633: <td width=21 class="Normal"> <p style='line-height:150%'>7 </p></td>
2634:
2635: <td width=177 class="Normal"> <p style='line-height:150%'>msu/mmp/kap6/calckap6.sequence
2636:
2637: </p></td>
2638:
2639: <td width=122 class="Normal"> <p style='line-height:150%'><span style='font-size:8.0pt'>YYYYYYYYYYYYYY
2640:
2641: </span></p></td>
2642:
2643: <td width=153 class="Normal"> <p style='line-height:150%'>3,2,4,2,1,1,2,1,1,9,2,3,2,2</p></td>
2644:
2645: </tr>
2646:
2647: <tr>
2648:
2649: <td width=21 class="Normal"> <p style='line-height:150%'>8 </p></td>
2650:
2651: <td width=177 class="Normal"> <p style='line-height:150%'>msu/mmp/kap7/calckap7.sequence
2652:
2653: </p></td>
2654:
2655: <td width=122 class="Normal"> <p style='line-height:150%'><span style='font-size:8.0pt'>YYYYYYYYYYYYYYYYYY
2656:
2657: </span></p></td>
2658:
2659: <td width=153 class="Normal"> <p style='line-height:150%'>4,1,3,1,10,4,1,1,2,1,1,2,1,2,1,3,1,3</p></td>
2660:
2661: </tr>
2662:
2663: <tr>
2664:
2665: <td width=21 class="Normal"> <p style='line-height:150%'>9 </p></td>
2666:
2667: <td width=177 class="Normal"> <p style='line-height:150%'>msu/mmp/kap8/calckap8.sequence
2668:
2669: </p></td>
2670:
2671: <td width=122 class="Normal"> <p style='line-height:150%'><span style='font-size:8.0pt'>YYYYYYYYYYYYYYY
2672:
2673: </span></p></td>
2674:
2675: <td width=153 class="Normal"> <p style='line-height:150%'>4,3,1,2,3,3,4,3,3,1,1,4,1,1,7</p></td>
2676:
2677: </tr>
2678:
2679: <tr>
2680:
2681: <td width=21 class="Normal"> <p style='line-height:150%'>10 </p></td>
2682:
2683: <td width=177 class="Normal"> <p style='line-height:150%'>msu/mmp/kap9/calckap9.sequence
2684:
2685: </p></td>
2686:
2687: <td width=122 class="Normal"> <p style='line-height:150%'><span style='font-size:8.0pt'>YYYYN-NYYNY
2688:
2689: </span></p></td>
2690:
2691: <td width=153 class="Normal"> <p style='line-height:150%'>1,1,1,2,1,,2,2,1,6,4</p></td>
2692:
2693: </tr>
2694:
2695: <tr>
2696:
2697: <td width=21 class="Normal"> <p style='line-height:150%'>11 </p></td>
2698:
2699: <td width=177 class="Normal"> <p style='line-height:150%'>msu/mmp/kap10/calckap10.sequence
2700:
2701: </p></td>
2702:
2703: <td width=122 class="Normal"> <p style='line-height:150%'><span style='font-size:8.0pt'>YYYYYYYYYYYY
2704:
2705: </span></p></td>
2706:
2707: <td width=153 class="Normal"> <p style='line-height:150%'>2,1,1,1,1,1,1,1,1,1,1,1</p></td>
2708:
2709: </tr>
2710:
2711: <tr>
2712:
2713: <td width=21 class="Normal"> <p style='line-height:150%'>12 </p></td>
2714:
2715: <td width=177 class="Normal"> <p style='line-height:150%'>msu/mmp/kap11/calckap11.sequence
2716:
2717: </p></td>
2718:
2719: <td width=122 class="Normal"> <p style='line-height:150%'>-----------------
2720:
2721: </p></td>
2722:
2723: <td width=153 class="Normal"> <p style='line-height:150%'>0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0</p></td>
2724:
2725: </tr>
2726:
2727: </table>
2728:
2729: <p><span style='layout-grid-mode:line'><b>Fig. 3.2. 5</b></span><span
2730:
2731: style='layout-grid-mode:line'>: A sample of a student homework results and tries</span></p>
2732:
2733: <p><span style='font-size:11.0pt;layout-grid-mode:line'>We plan to present
2734:
2735: several other reports in this page as well. Some student classification
2736:
2737: reports also would be depicted here.</span></p>
2738:
2739: <p><span style='font-size:11.0pt;layout-grid-mode:line'>In Òproblem statsÓ
2740:
2741: and Òstudent assessmentÓ pages, an instructor can limit the range of
2742:
2743: his/her information to a particular section or a particular homework
2744:
2745: set. So, an instructor would be able to load the statistics table
2746:
2747: or student tries in Òstudent assessmentÓ table to a particular map or
2748:
2749: section. </span><span style='font-size:11.0pt'>After changing the map
2750:
2751: or section, he/she would be able to see the results via the recalculating
2752:
2753: the computation on that page. </span><span style='font-size:11.0pt;
2754:
2755: font-family:Arial;layout-grid-mode:line'></span></p>
2756:
2757: <h3><a name="_Toc421867143"><span style='layout-grid-mode:line'>Future
2758:
2759: work, using activity.log to classify the students</span></a></h3>
2760:
2761: <p><span style='font-size:11.0pt'>The problem is whether we can find the
2762:
2763: good features for <i>classifying</i></span><span style='font-size:
2764:
2765: 11.0pt'> students? If so, we would be able to identify a <i>predictor</i></span><span
2766:
2767: style='font-size:11.0pt'> for any individual student after doing a couple of homework
2768:
2769: sets. With this information, we would be able to <i>help</i></span><span
2770:
2771: style='font-size:11.0pt'> a student use the resources better. <span style='layout-grid-mode:line'>As
2772:
2773: the first step of data mining stuff w</span>e want to make an initial
2774:
2775: effort to classify the students. </span></p>
2776:
2777: <p><span style='font-size:11.0pt'>Preprocessing and finding the useful
2778:
2779: student data and segmenting may be a difficult task. Internally, one
2780:
2781: part of this data is stored in a student directory:</span></p>
2782:
2783: <p><span style='font-size:11.0pt'> </span><span style='font-size:11.0pt;font-family:"Courier New"'>/</span><span
2784:
2785: style='font-size:9.0pt;font-family:"Courier New"'>home/httpd/lonUsers/<i>domain</i></span><span
2786:
2787: style='font-size:9.0pt;font-family:"Courier New"'>/<i>1st.char</i></span><span
2788:
2789: style='font-size:9.0pt;font-family:"Courier New"'>/<i>2nd.char</i></span><span
2790:
2791: style='font-size:9.0pt;font-family:"Courier New"'>/<i>3rd.char</i></span><span
2792:
2793: style='font-size:9.0pt;font-family:"Courier New"'>/<i>username</i></span><span
2794:
2795: style='font-size:9.0pt;font-family:"Courier New"'>/</span></p>
2796:
2797: <p class=MsoHeader><span style='font-size:11.0pt'>For example: /home/httpd/lonUsers/msu/m/i/n/minaeibi/</span></p>
2798:
2799: <p><span style='font-size:11.0pt;layout-grid-mode:line'>Since spring semester
2800:
2801: 2002, LON-CAPA has logged every activity of every student who has used</span><span style='font-size:11.0pt'>
2802:
2803: online educational resources and their recorded paths through the web.
2804:
2805: So another part of data is stored in Òactivity.logÓ which is located
2806:
2807: in course directory.</span></p>
2808:
2809: <p><span style='font-size:11.0pt'>The student data restored from .db files
2810:
2811: in student directory and is fetched into a hash table. The special hash
2812:
2813: keys Ò<i>keysÓ</i></span><span style='font-size:11.0pt'>, Ò<i>versionÓ</i></span><span
2814:
2815: style='font-size:11.0pt'> and Ò<i>timestampÓ</i></span><span style='font-size:
2816:
2817: 11.0pt'> were evaluated from the hash. The <i>version</i></span><span
2818:
2819: style='font-size:11.0pt'> will be equal to the total number of versions of the
2820:
2821: data that have been stored. The <i>timestamp</i></span><span style='font-size:
2822:
2823: 11.0pt'> attribute is the UNIX time the data was stored. <i>keys</i></span><span
2824:
2825: style='font-size:11.0pt'> is available in every historical section to list which
2826:
2827: keys were added or changed at a specific historical revision of a hash.
2828:
2829: We extract the features from a structured homework data, which is stored
2830:
2831: as particular URLÕs. For example the result of solving homeworkÕs problem
2832:
2833: by students could be extracted from </span><span style='font-size:9.0pt;
2834:
2835: font-family:"Courier New"'><i>resource.partid.solved</i></span><span
2836:
2837: style='font-size:11.0pt;font-family:"Courier New"'>, </span><span
2838:
2839: style='font-size:11.0pt'>the total number of the students for solving the problem
2840:
2841: could be extracted from </span><span style='font-size:9.0pt;font-family:
2842:
2843: "Courier New"'><i>resource.partid.tries</i></span><span style='font-size:11.0pt;
2844:
2845: font-family:"Courier New"'>,</span><span style='font-size:11.0pt'> and so forth.</span></p>
2846:
2847: <p><span style='font-size:11.0pt'>All data stored in activity.log includes
2848:
2849: <i>user name</i></span><span style='font-size:11.0pt'>, <i>time</i></span><span
2850:
2851: style='font-size:11.0pt'> and <i>resource URL</i></span><span style='font-size:
2852:
2853: 11.0pt'>. We can divide these data into six types of URLs, listed below, according
2854:
2855: to their importance for data mining: </span></p>
2856:
2857: <p style='line-height:150%'><span style='font-size:11.0pt'>1. <b><u>problems:</u></b></span><span
2858:
2859: style='font-size:11.0pt'> are the most useful data. i.e.<b><u> </u></b></span><span
2860:
2861: style='font-size:7.0pt'><b><u>msu/mmp/kap14/kap14.sequence___33___msu/mmp/kap14/problems/cd418a.problem</u></b></span>
2862:
2863: <br>
2864:
2865: <span style='font-size:11.0pt'>2. <b>html pages</b></span><span
2866:
2867: style='font-size:11.0pt'> to those are some links in the problems. i.e. </span><span
2868:
2869: style='font-size:7.0pt'><b>msu/mmp/kap14/kap14.sequence___5___msu/mmp/kap14/cd396.htm</b></span>
2870:
2871: <br>
2872:
2873: <span style='font-size:11.0pt'>3. <i>the images</i></span><span
2874:
2875: style='font-size:11.0pt'>, which are loaded in above html pages. i.e. <i>/res/msu/mmp/kap14/picts/backsoun.gif</i></span><span
2876:
2877: style='font-size:11.0pt'> .</span></p>
2878:
2879: <p style='line-height:150%'><span style='font-size:11.0pt'>4. <u>loncapa
2880:
2881: routines</u>: i.e. <u>/adm/navmaps,</u> or <u>/adm/roles,</u>
2882:
2883: or <u>/adm/logout</u>.<br>
2884:
2885: 5. <i><u>Posted data</u></i></span><span style='font-size:11.0pt'> by
2886:
2887: students: i.e. <i><u>resource.0.11.submission=27.11</u></i></span><span style='font-size:
2888:
2889: 11.0pt'> <br>
2890:
2891: 6. remote control gif files: i.e.: /res/adm/pages/v.gif </span></p>
2892:
2893: <p>So, activity.log usually grows fast, when students have more access
2894:
2895: to the educational resources. We have brought a sample of different
2896:
2897: types of data which are logged in activity.log after a preprocessing
2898:
2899: phase as follows: </p>
2900:
2901: <p><u>144) 1010955846: studentX --> /adm/navmaps</u> <br>
2902:
2903: <i>145) 1010955205: studentX --> /res/msu/mmp/kap14/picts/beta_eqn.gif</i><span
2904:
2905: style='font-style:normal'> <br>
2906:
2907: <u>146) 1010955685: studentX --> /adm/navmaps</u> <br>
2908:
2909: <u>147) 1010955988: studentX --> /adm/navmaps</u> <br>
2910:
2911: </span><span style='font-size:8.0pt'><b>148) 1010955998: studentX -->
2912:
2913: msu/mmp/kap14/kap14.sequence___5___msu/mmp/kap14/cd396.htm</b></span>
2914:
2915: <br>
2916:
2917: <i>149) 1010955999: studentX --> /res/msu/mmp/kap14/picts/velocity_eqn3.gif</i>
2918:
2919: <br>
2920:
2921: <i>150) 1010956000: studentX --> /res/msu/mmp/kap14/picts/time_eqn.gif</i><span style='font-style:normal'>
2922:
2923: <br>
2924:
2925: 151) 1010954609: studentX --> /res/adm/pages/grds.gif <br>
2926:
2927: </span><i>152) 1010954611: studentX --> /res/msu/mmp/wordproc.gif</i><span
2928:
2929: style='font-style:normal'> <br>
2930:
2931: 153) 1010954626: studentX --> /res/adm/pages/i.gif <br>
2932:
2933: </span><span style='font-size:8.0pt'><b>154) 1010955717: studentX -->
2934:
2935: msu/mmp/kap14/kap14.sequence___1___msu/mmp/kap14/cd392.htm</b></span>
2936:
2937: <br>
2938:
2939: <i>155) 1010955717: studentX --> /res/msu/mmp/kap14/picts/backsoun.gif</i>
2940:
2941: <br>
2942:
2943: <span style='font-size:8.0pt'><b>156) 1010955920: studentX --> msu/mmp/kap14/kap14.sequence___3___msu/mmp/kap14/cd394.htm</b></span>
2944:
2945: <br>
2946:
2947: <i>157) 1010955921: studentX --> /res/msu/mmp/gifs/demo.gif</i><span
2948:
2949: style='font-style:normal'> <br>
2950:
2951: 158) 1010956113: studentX --> /res/adm/pages/v.gif <br>
2952:
2953: 159) 1010954629: studentX --> /res/adm/pages/eval.gif <br>
2954:
2955: 160) 1010954631: studentX --> /res/adm/pages/back.gif <br>
2956:
2957: 161) 1010954632: studentX --> /res/adm/pages/b.gif <br>
2958:
2959: 162) 1010954633: studentX --> /res/adm/pages/r.gif <br>
2960:
2961: </span><span style='font-size:9.0pt'><b>163) 1010955754:</b></span><b>
2962:
2963: studentX --> msu/mmp/kap14/kap14.sequence___2___msu/mmp/kap14/cd393.htm</b><span
2964:
2965: style='font-weight:normal'> <br>
2966:
2967: <i>164) 1010955756: studentX --> /res/msu/mmp/kap14/picts/asound.jpg</i></span>
2968:
2969: <br>
2970:
2971: <i>165) 1010955762: studentX --> /res/msu/mmp/kap14/picts/sensor.jpg</i>
2972:
2973: <br>
2974:
2975: <i>166) 1010955999: studentX --> /res/msu/mmp/gifs2/example.gif</i><span
2976:
2977: style='font-style:normal'> <br>
2978:
2979: 173) 1010955687: studentX --> /res/adm/pages/u.gif <br>
2980:
2981: 174) 1010955688: studentX --> /res/adm/pages/s.gif <br>
2982:
2983: 175) 1010955688: studentX --> /res/adm/pages/e.gif <br>
2984:
2985: </span><span style='font-size:9.0pt'><b>176) 1010956528:</b></span><b>
2986:
2987: studentX</b><span
2988:
2989: style='font-size:9.0pt'><b> --> msu/mmp/kap14/kap14.sequence___33___msu/mmp/kap14/problems/cd418a.problem</b></span>
2990:
2991: <br>
2992:
2993: <i><u>177) Sent data</u></i> <br>
2994:
2995: <span style='font-size:9.0pt'><b><u>178) 1010956536: </u></b></span><b><u>studentX</u></b><span
2996:
2997: style='font-size:9.0pt'><u><b> --></b></u></span><b><u> </u></b><span
2998:
2999: style='font-size:9.0pt'><u><b>msu/mmp/kap14/kap14.sequence___33___msu/mmp/kap14/problems/cd418a.problem</b></u></span>
3000:
3001: <br>
3002:
3003: <i><u>179) Sent data HWVAL11=27.11</u></i> <br>
3004:
3005: <span style='font-size:9.0pt'><b><u>180) 1010956536:</u></b></span><b><u>
3006:
3007: studentX</u></b><span style='font-size:9.0pt'><u><b> --></b></u></span><b><u>
3008:
3009: </u></b><span style='font-size:9.0pt'><u><b>msu/mmp/kap14/kap14.sequence___33___msu/mmp/kap14/problems/cd418a.problem</b></u></span>
3010:
3011: <br>
3012:
3013: <i><u>181) Sent data resource.0.11.submission=27.11</u></i> <br>
3014:
3015: <span style='font-size:9.0pt'><b><u>182) 1010956702: studentX -->
3016:
3017: msu/mmp/kap14/kap14.sequence___33___msu/mmp/kap14/problems/cd418a.problem</u></b></span>
3018:
3019: <br>
3020:
3021: <span style='font-size:11.0pt'><i><u>183) Sent data</u></i></span><span
3022:
3023: style='font-size:11.0pt'> <br>
3024:
3025: <i>184) 1010955921: studentX --> /res/msu/mmp/kap14/picts/areal.gif</i></span><span
3026:
3027: style='font-size:11.0pt'> <br>
3028:
3029: 185) 1010955731: studentX --> /res/adm/pages/n.gif <br>
3030:
3031: <br>
3032:
3033: </span></p>
3034:
3035: <p class=H5> <span
3036:
3037: style='font-size:11.0pt;font-family:Symbol;font-weight:normal'>á<span
3038:
3039: style='font:7.0pt "Times New Roman"'> </span></span>
3040:
3041: <span
3042:
3043: style='font-size:11.0pt;font-family:Arial'>Feature Extraction</span></p>
3044:
3045: <p class=MsoBodyText2>From these two types of student data which are stored
3046:
3047: by the LON-CAPA system, the features may be considered for classifying
3048:
3049: the students, are as follows: </p>
3050:
3051: <p> 1.<span style='font:7.0pt "Times New Roman"'>
3052:
3053: </span> Total number of correct answers. </p>
3054:
3055: <p> 2.<span style='font:7.0pt "Times New Roman"'>
3056:
3057: </span> Total number of tries for doing homework. </p>
3058:
3059: <p> 3.<span style='font:7.0pt "Times New Roman"'>
3060:
3061: </span> Time at which the student got the problem correct. Usually better
3062:
3063: students get the homework completed earlier.</p>
3064:
3065: <p> 4.<span style='font:7.0pt "Times New Roman"'>
3066:
3067: </span> Reading the material before attempting homework vs. attempting
3068:
3069: first and then read up on it.</p>
3070:
3071: <p> 5.<span style='font:7.0pt "Times New Roman"'>
3072:
3073: </span> Submitting a lot of attempts in a short amount of time without
3074:
3075: looking up material in between, vs. those giving it one try, reading
3076:
3077: up, submitting another one, etc.</p>
3078:
3079: <p> 6.<span style='font:7.0pt "Times New Roman"'>
3080:
3081: </span> Getting the problem right on the first try, vs. those with high
3082:
3083: number of tries.</p>
3084:
3085: <p> 7.<span style='font:7.0pt "Times New Roman"'>
3086:
3087: </span> Giving up on a problem versus students continuing trying up
3088:
3089: to the deadline.</p>
3090:
3091: <p> 8.<span style='font:7.0pt "Times New Roman"'>
3092:
3093: </span> Participating in the communication mechanisms, vs. those working
3094:
3095: alone.</p>
3096:
3097: <p><br>
3098:
3099: It might be interesting to group students with time of the first log
3100:
3101: on (beginning of assignment, middle of the week, last minute) and correlate
3102:
3103: this with the number of tries or number of solved problems. A student
3104:
3105: who gets all correct answers will not necessarily be in the successful
3106:
3107: group if they took an average of 5 tries per problem, but it should
3108:
3109: be verified from this research. </p>
3110:
3111: <p>We hope to find similar patterns of use in the data gathered from LON-CAPA,
3112:
3113: and eventually be able to make predictions as to the most-beneficial
3114:
3115: course of studies for each learner based on a limited number of variables
3116:
3117: for each individual student. Based on the current state of the learner
3118:
3119: in a learning sequence, the system could then make suggestions to the
3120:
3121: learner as to how to proceed. </p>
3122:
3123: </form>
3124:
3125: <br
3126:
3127: clear=ALL style='page-break-before:always;'>
3128:
3129: <div class=Section2> </div></div>
3130:
3131: <br clear=all>
3132:
3133: <hr align=left size=1 width="33%">
3134:
3135: <div id=ftn1>
3136:
3137: <p class=MsoFootnoteText><a href="#_ftnref1"
3138:
3139: name="_ftn1" title=""><span class=MsoFootnoteReference> [1] </span></a> If instructor
3140:
3141: is going to port the statistics table data to Excel, he/she can select
3142:
3143: the checkbox ÒOutput CSV formatÓ at top of the statistics table.</p>
3144:
3145: </div>
3146:
3147: <div id=ftn2>
3148:
3149: <p class=MsoFootnoteText><a href="#_ftnref2"
3150:
3151: name="_ftn2" title=""><span class=MsoFootnoteReference> [2] </span></a>
3152:
3153: This name has been got from administration office of Michigan State
3154:
3155: University for evaluating the examsÕ problem. Here we expanded this
3156:
3157: expression to homework problems as well.</p>
3158:
3159: </div></span></span></span></span></span>
3160:
3161:
3162:
3163: </body>
3164:
3165: </html>
3166:
FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>
![[BACK]](/icons/back.gif){kind=icon}
Return to SessionTw2.html CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [LON-CAPA] / doc / gutshtml