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HTML version of GUTS manual. Individual files will still need cleanup.
1: <html>
2: <head>
3: <meta name=Title content="Session Two: Statistics/Chart (Behrouz)">
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7: <title>Session Two: Statistics/Chart (Behrouz)</title>
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56: <body bgcolor=#FFFFFF link=blue vlink=purple class="Normal" lang=EN-US><div class=Section1>
57: <h2>Session Two: Statistics/Chart (Behrouz)</h2>
58: <p><span style='layout-grid-mode:line'>In LON-CAPA, we are involved with two kinds
59: of large data sets: </span></p>
60: <p> <span style='layout-grid-mode:line'>1)<span
61: style='font:7.0pt "Times New Roman"'> </span></span> <span
62: style='layout-grid-mode:line'>Educational resources such as </span>web pages,
63: demonstrations, simulations, and individualized problems designed for use on
64: homework assignments, quizzes, and examinations<span style='layout-grid-mode:
65: line'>; </span></p>
66: <p> <span style='layout-grid-mode:line'>2)<span
67: style='font:7.0pt "Times New Roman"'> </span></span> <span
68: style='layout-grid-mode:line'>Information about users who create, modify, assess,
69: or use these resources. </span></p>
70: <p><span style='layout-grid-mode:line'>Usually, instructors/ course coordinators
71: wish to assess the studentsÕ educational situation or evaluate the problems
72: have bee presented in the course, after the students used the educational materials.
73: There are two main modules in LON_CAPA that provide the statistical information
74: for instructors/ course-coordinators: <i>lonchart.pm </i></span><span style='layout-grid-mode:line'>and
75: <i>lonstatistics.pm</i></span><span
76: style='layout-grid-mode:line'>. When an instructorÕs access is authorized, he/she
77: can find useful reports about the course, regarding maps, problems included
78: in each map, and the students who tried to solve the problems. When an instructor
79: selects a course, he/she has two buttons in remote control to obtain the statistical
80: information: Ò<i>chart</i></span><span style='layout-grid-mode:
81: line'>Ó or Ò<i>stat</i></span><span style='layout-grid-mode:line'>Ó button.</span></p>
82: <h3 style='line-height:150%'><a name="_Toc421867139"><span style='layout-grid-mode:
83: line'>lonchart.pm</span></a></h3>
84: <p><span style='font-size:11.0pt;layout-grid-mode:line'>Ò<i>chart</i></span><span
85: style='font-size:11.0pt;layout-grid-mode:line'>Ó button in remote control calls
86: lonchart.pm, which provides a quick review of students tries on different problems
87: of a course for an instructor. The instructor may monitor the number of
88: tries of every student in each map and its problems.<span style='color:red'>
89: </span>The number of solved problems in a map is shown in the end of each map
90: with a different color (green). The overall solved problems and total number
91: of problems in the map can be seen at the end of line according to every individual
92: student in a different color (blue). A sample of chart is shown in <b>Fig. 3.2.1</b></span></p>
93: <p><span style='font-size:9.0pt;border:solid windowtext .5pt;
94: padding:0in'>xxxxxxx1:msu ! 001 ! 1*11*121 <span style='color:green'>8</span>
95: 1231.31423212 <span style='color:green'>12 </span> 2111211284.131 <span style='color:green'>13</span>
96: É 231113112221 <span style='color:green'>12</span> <span style='color:navy'>162
97: / 188<br>
98: </span>xxxxxxx2:msu ! 003 ! 12113162 <span style='color:green'>8</span> 1+11
99: 1 21x111<span style='color:green'>10</span> 11211322246132 <span
100: style='color:green'>14</span> É ############<span style='color:green'> 0
101: </span><span
102: style='color:navy'>149 / 188</span><span style='color:green'> <br>
103: <br>
104: </span></span></p>
105: <div style='border:solid windowtext .5pt;padding:1.0pt 0in 1.0pt 1.0pt'>
106: <p style='border:none;padding:0in;'>1..9: correct by student in 1..9 tries </p>
107: <p style='border:none;padding:0in;'>*: correct by student in more than 9 tries
108: </p>
109: <p style='border:none;padding:0in;'>+: correct by override </p>
110: <p style='border:none;padding:0in;'>-: incorrect by override </p>
111: <p style='border:none;padding:0in;'>.: incorrect attempted </p>
112: <p style='border:none;padding:0in;'>#: ungraded attempted </p>
113: <p style='border:none;padding:0in;'>Ô Ô: not attempted </p>
114: <p style='border:none;padding:0in;'>x: excused</p>
115: </div>
116: <p><span style='font-size:14.0pt'><b>Fig. 3.2.1</b></span><span
117: style='font-size:14.0pt'> Chart of map, problems, and studentsÕ tries, and a quick
118: statistics of solved problems</span></p>
119: <p><span style='layout-grid-mode:line'>1. When an instructor loads the chart in
120: his/her machine once, its data is cached in his/her local machine. If he/she
121: runs the chart again, the course chart is loaded very quickly from the cache.</span></p>
122: <p><span style='layout-grid-mode:line'>2. An instructor can sort the chart according
123: to user name, last name, as well as, the section which student belongs to.</span></p>
124: <div style='border:solid windowtext .5pt;padding:1.0pt 4.0pt 1.0pt 4.0pt'>
125: <p align=center style='text-align:center;
126: border:none;padding:0in;'><span style='font-size:8.0pt;font-family:Arial;
127: display:none'>Top of Form</span></p>
128: </div>
129: <div style='border:solid windowtext .5pt;padding:1.0pt 4.0pt 0in 4.0pt'>
130: <p align=center style='
131: text-align:center;
132: border:none;padding:
133: 0in;'><b>Sort by: </b><span
134: style='font-weight:normal'> <img width=53 height=23
135: src="Session%20Tw2_files/image003.png" v:shapes="_x0000_i1025">
136: <img width=51 height=23
137: src="Session%20Tw2_files/image006.png" v:shapes="_x0000_i1026">
138: <img width=40 height=23
139: src="Session%20Tw2_files/image009.png" v:shapes="_x0000_i1027"> <br>
140: <br>
141: </span></p>
142: </div>
143: <p>3. The instructor is able to select the ÒexpiredÓ students (who dropped the
144: course earlier) or ÒactiveÓ students or ÒanyÓ (all the) students.</p>
145: <div style='border:solid windowtext .5pt;padding:1.0pt 4.0pt 1.0pt 0in'>
146: <p align=center style='
147: text-align:center;
148: border:none;padding:0in;
149: '><br>
150: <b>Student Status: </b><span style='font-weight:normal'> <img width=66 height=18
151: src="Session%20Tw2_files/image012.png" v:shapes="_x0000_i1028">
152: <img width=77 height=23
153: src="Session%20Tw2_files/image015.png" v:shapes="_x0000_i1029"> </span></p>
154: </div>
155: <div style='border:none;border-top:solid windowtext .75pt;padding:1.0pt 0in 0in 0in'>
156: <p align=center style='text-align:center;border:none;
157: padding:0in;'><span
158: style='font-size:8.0pt;font-family:Arial;display:none'>Bottom of Form</span></p>
159: </div>
160: <h3 style='line-height:200%'><a name="_Toc421867140"><span style='layout-grid-mode:
161: line'>lonstatistics.pm</span></a></h3>
162: <p><span style='layout-grid-mode:line'>In ÒstatÓ button of Òremote controlÓ, a
163: menu with three options is provided for instructor: </span></p>
164: <p> <span style='layout-grid-mode:line'>1)<span
165: style='font:7.0pt "Times New Roman"'> </span></span> <span
166: style='layout-grid-mode:line'>Problem stats</span></p>
167: <p> <span style='layout-grid-mode:line'>2)<span
168: style='font:7.0pt "Times New Roman"'> </span></span> <span
169: style='layout-grid-mode:line'>Problem Analysis</span></p>
170: <p> <span style='font-size:11.0pt;
171: layout-grid-mode:line'>3)<span style='font:7.0pt "Times New Roman"'>
172: </span></span> <span style='layout-grid-mode:line'>Student Assessment</span></p>
173: <h4 style='line-height:150%'><span style='font-size:6.0pt;font-family:Arial;
174: layout-grid-mode:line;font-weight:normal'> </span></h4>
175: <h4><span style='font-size:12.0pt;font-family:Arial;layout-grid-mode:line'>
176: </span></h4>
177: <h4><span style='font-size:12.0pt;font-family:Arial;layout-grid-mode:line;
178: font-weight:normal'>Problem Stats</span></h4>
179: <p><span style='layout-grid-mode:line'>Ò<i>Problem Stats</i></span><span
180: style='layout-grid-mode:line'>Ó button provides a table<a href="#_ftn1" name="_ftnref1" title=""><span class=MsoFootnoteReference>
181: [1] </span></a> which includes statistical information about every problem,
182: as you see in <b>Fig. 3.2.2</b></span><span style='layout-grid-mode:line'>.
183: The function ExtractStudentData in lonstatitics Perl Module fetches all the
184: data from a particular student<a name="_Hlt9981185"></a> .db file into a big
185: hash in local machine. It uses dump function, which communicates via lonc/lond
186: to get the student data from student repository (data server) and then all versions
187: of student submissions computed according to every problem. The results are
188: stored in an array in the memory. Before computing the studentsÕ tries
189: in a particular problem, the different parts of problem are distinguished by
190: considering the meta-data, which is provided for every problem. </span></p>
191: <p><span style='"HYPERLINK \0022http\:\/\/deepthought\.lite\.msu\.edu\/res\/msu\/mmp\/kap1\/calckap1\.sequence\0022 \\t \0022_blank\0022"'><span
192: class=MsoHyperlink><span style='color:blue'>Homework Set 1</span></span></span>
193: </p>
194: <table border=1 cellspacing=0 cellpadding=0>
195: <tr>
196: <td width=21 class="Normal"> <p align=center style='text-align:center'><b>P#</b></p></td>
197: <td width=72 class="Normal"> <p align=center style='text-align:center'><b>
198: <img width=94 height=23
199: src="Session%20Tw2_files/image018.png" v:shapes="_x0000_i1030"> </b></p></td>
200: <td width=37 class="Normal"> <p align=center style='text-align:center'><b>
201: <img width=41 height=23
202: src="Session%20Tw2_files/image021.png" v:shapes="_x0000_i1031"> </b></p></td>
203: <td width=29 class="Normal"> <p align=center style='text-align:center'><b>
204: <img width=31 height=23
205: src="Session%20Tw2_files/image024.png" v:shapes="_x0000_i1032"> </b></p></td>
206: <td width=26 class="Normal"> <p align=center style='text-align:center'><b>
207: <img width=28 height=23
208: src="Session%20Tw2_files/image027.png" v:shapes="_x0000_i1033"> </b></p></td>
209: <td width=30 class="Normal"> <p align=center style='text-align:center'><b>
210: <img width=32 height=23
211: src="Session%20Tw2_files/image030.png" v:shapes="_x0000_i1034"> </b></p></td>
212: <td width=31 class="Normal"> <p align=center style='text-align:center'><b>
213: <img width=33 height=23
214: src="Session%20Tw2_files/image033.png" v:shapes="_x0000_i1035"> </b></p></td>
215: <td width=29 class="Normal"> <p align=center style='text-align:center'><b>
216: <img width=31 height=23
217: src="Session%20Tw2_files/image036.png" v:shapes="_x0000_i1036"> </b></p></td>
218: <td width=36 class="Normal"> <p align=center style='text-align:center'><b>
219: <img width=40 height=23
220: src="Session%20Tw2_files/image039.png" v:shapes="_x0000_i1037"> </b></p></td>
221: <td width=32 class="Normal"> <p align=center style='text-align:center'><b>
222: <img width=35 height=23
223: src="Session%20Tw2_files/image042.png" v:shapes="_x0000_i1038"> </b></p></td>
224: <td width=26 class="Normal"> <p align=center style='text-align:center'><b>
225: <img width=28 height=23
226: src="Session%20Tw2_files/image045.png" v:shapes="_x0000_i1039"> </b></p></td>
227: <td width=33 class="Normal"> <p align=center style='text-align:center'><b>
228: <img width=36 height=23
229: src="Session%20Tw2_files/image048.png" v:shapes="_x0000_i1040"> </b></p></td>
230: <td width=35 class="Normal"> <p align=center style='text-align:center'><b>
231: <img width=38 height=23
232: src="Session%20Tw2_files/image051.png" v:shapes="_x0000_i1041"> </b></p></td>
233: <td width=37 class="Normal"> <p align=center style='text-align:center'><b>
234: <img width=41 height=23
235: src="Session%20Tw2_files/image054.png" v:shapes="_x0000_i1042"> </b></p></td>
236: </tr>
237: <tr>
238: <td width=21 class="Normal"> <p>1</p></td>
239: <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
240: class=MsoHyperlink><span style='color:blue'>Calculator Skills</span></span></span></span></p></td>
241: <td width=37 bgcolor="white" class="Normal"> <p>256</p></td>
242: <td width=29 bgcolor="white" class="Normal"> <p>267</p></td>
243: <td width=26 bgcolor="white" class="Normal"> <p>3</p></td>
244: <td width=30 bgcolor="white" class="Normal"> <p>1.04</p></td>
245: <td width=31 bgcolor="white" class="Normal"> <p>256</p></td>
246: <td width=29 bgcolor="white" class="Normal"> <p>0</p></td>
247: <td width=36 bgcolor="white" class="Normal"> <p>0.0</p></td>
248: <td width=32 bgcolor="white" class="Normal"> <p>0.04</p></td>
249: <td width=26 bgcolor="white" class="Normal"> <p>0.2</p></td>
250: <td width=33 bgcolor="white" class="Normal"> <p>5.7</p></td>
251: <td width=35 bgcolor="white" class="Normal"> <p>0.03</p></td>
252: <td width=37 bgcolor="white" class="Normal"> <p>0.00</p></td>
253: </tr>
254: <tr>
255: <td width=21 class="Normal"> <p>2</p></td>
256: <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
257: class=MsoHyperlink><span style='color:blue'>Numbers</span></span></span></span></p></td>
258: <td width=37 bgcolor="white" class="Normal"> <p>256</p></td>
259: <td width=29 bgcolor="white" class="Normal"> <p>414</p></td>
260: <td width=26 bgcolor="white" class="Normal"> <p>17</p></td>
261: <td width=30 bgcolor="white" class="Normal"> <p>1.62</p></td>
262: <td width=31 bgcolor="white" class="Normal"> <p>255</p></td>
263: <td width=29 bgcolor="white" class="Normal"> <p>0</p></td>
264: <td width=36 bgcolor="white" class="Normal"> <p>0.4</p></td>
265: <td width=32 bgcolor="white" class="Normal"> <p>0.38</p></td>
266: <td width=26 bgcolor="white" class="Normal"> <p>1.6</p></td>
267: <td width=33 bgcolor="white" class="Normal"> <p>5.7</p></td>
268: <td width=35 bgcolor="white" class="Normal"> <p>0.11</p></td>
269: <td width=37 bgcolor="white" class="Normal"> <p>0.02</p></td>
270: </tr>
271: <tr>
272: <td width=21 class="Normal"> <p>3</p></td>
273: <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
274: class=MsoHyperlink><span style='color:blue'>Speed</span></span></span></span></p></td>
275: <td width=37 bgcolor="white" class="Normal"> <p>256</p></td>
276: <td width=29 bgcolor="white" class="Normal"> <p>698</p></td>
277: <td width=26 bgcolor="white" class="Normal"> <p>13</p></td>
278: <td width=30 bgcolor="white" class="Normal"> <p>2.73</p></td>
279: <td width=31 bgcolor="white" class="Normal"> <p>255</p></td>
280: <td width=29 bgcolor="white" class="Normal"> <p>0</p></td>
281: <td width=36 bgcolor="white" class="Normal"> <p>0.4</p></td>
282: <td width=32 bgcolor="white" class="Normal"> <p>0.63</p></td>
283: <td width=26 bgcolor="white" class="Normal"> <p>2.2</p></td>
284: <td width=33 bgcolor="white" class="Normal"> <p>1.9</p></td>
285: <td width=35 bgcolor="white" class="Normal"> <p>0.06</p></td>
286: <td width=37 bgcolor="white" class="Normal"> <p>0.02</p></td>
287: </tr>
288: <tr>
289: <td width=21 class="Normal"> <p>4</p></td>
290: <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
291: class=MsoHyperlink><span style='color:blue'>Perimeter</span></span></span></span></p></td>
292: <td width=37 bgcolor="white" class="Normal"> <p>256</p></td>
293: <td width=29 bgcolor="white" class="Normal"> <p>388</p></td>
294: <td width=26 bgcolor="white" class="Normal"> <p>7</p></td>
295: <td width=30 bgcolor="white" class="Normal"> <p>1.52</p></td>
296: <td width=31 bgcolor="white" class="Normal"> <p>255</p></td>
297: <td width=29 bgcolor="white" class="Normal"> <p>0</p></td>
298: <td width=36 bgcolor="white" class="Normal"> <p>0.4</p></td>
299: <td width=32 bgcolor="white" class="Normal"> <p>0.34</p></td>
300: <td width=26 bgcolor="white" class="Normal"> <p>0.9</p></td>
301: <td width=33 bgcolor="white" class="Normal"> <p>2.4</p></td>
302: <td width=35 bgcolor="white" class="Normal"> <p>-0.00</p></td>
303: <td width=37 bgcolor="white" class="Normal"> <p>0.02</p></td>
304: </tr>
305: <tr>
306: <td width=21 class="Normal"> <p>5</p></td>
307: <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
308: class=MsoHyperlink><span style='color:blue'>Reduce a Fraction</span></span></span></span></p></td>
309: <td width=37 bgcolor="white" class="Normal"> <p>256</p></td>
310: <td width=29 bgcolor="white" class="Normal"> <p>315</p></td>
311: <td width=26 bgcolor="white" class="Normal"> <p>4</p></td>
312: <td width=30 bgcolor="white" class="Normal"> <p>1.23</p></td>
313: <td width=31 bgcolor="white" class="Normal"> <p>256</p></td>
314: <td width=29 bgcolor="white" class="Normal"> <p>0</p></td>
315: <td width=36 bgcolor="white" class="Normal"> <p>0.0</p></td>
316: <td width=32 bgcolor="white" class="Normal"> <p>0.19</p></td>
317: <td width=26 bgcolor="white" class="Normal"> <p>0.5</p></td>
318: <td width=33 bgcolor="white" class="Normal"> <p>2.3</p></td>
319: <td width=35 bgcolor="white" class="Normal"> <p>0.01</p></td>
320: <td width=37 bgcolor="white" class="Normal"> <p>0.00</p></td>
321: </tr>
322: <tr>
323: <td width=21 class="Normal"> <p>6</p></td>
324: <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
325: class=MsoHyperlink><span style='color:blue'>Calculating with Fractions</span></span></span></span></p></td>
326: <td width=37 bgcolor="white" class="Normal"> <p>256</p></td>
327: <td width=29 bgcolor="white" class="Normal"> <p>393</p></td>
328: <td width=26 bgcolor="white" class="Normal"> <p>7</p></td>
329: <td width=30 bgcolor="white" class="Normal"> <p>1.54</p></td>
330: <td width=31 bgcolor="white" class="Normal"> <p>255</p></td>
331: <td width=29 bgcolor="white" class="Normal"> <p>0</p></td>
332: <td width=36 bgcolor="white" class="Normal"> <p>0.4</p></td>
333: <td width=32 bgcolor="white" class="Normal"> <p>0.35</p></td>
334: <td width=26 bgcolor="white" class="Normal"> <p>0.9</p></td>
335: <td width=33 bgcolor="white" class="Normal"> <p>2.0</p></td>
336: <td width=35 bgcolor="white" class="Normal"> <p>0.15</p></td>
337: <td width=37 bgcolor="white" class="Normal"> <p>0.02</p></td>
338: </tr>
339: <tr>
340: <td width=21 class="Normal"> <p>7</p></td>
341: <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
342: class=MsoHyperlink><span style='color:blue'>Area of a Balloon</span></span></span></span></p></td>
343: <td width=37 bgcolor="white" class="Normal"> <p>254</p></td>
344: <td width=29 bgcolor="white" class="Normal"> <p>601</p></td>
345: <td width=26 bgcolor="white" class="Normal"> <p>12</p></td>
346: <td width=30 bgcolor="white" class="Normal"> <p>2.37</p></td>
347: <td width=31 bgcolor="white" class="Normal"> <p>247</p></td>
348: <td width=29 bgcolor="white" class="Normal"> <p>0</p></td>
349: <td width=36 bgcolor="white" class="Normal"> <p>2.8</p></td>
350: <td width=32 bgcolor="white" class="Normal"> <p>0.59</p></td>
351: <td width=26 bgcolor="white" class="Normal"> <p>1.8</p></td>
352: <td width=33 bgcolor="white" class="Normal"> <p>1.8</p></td>
353: <td width=35 bgcolor="white" class="Normal"> <p>-0.05</p></td>
354: <td width=37 bgcolor="white" class="Normal"> <p>-0.02</p></td>
355: </tr>
356: <tr>
357: <td width=21 class="Normal"> <p>8</p></td>
358: <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
359: class=MsoHyperlink><span style='color:blue'>Volume of a Balloon</span></span></span></span></p></td>
360: <td width=37 bgcolor="white" class="Normal"> <p>252</p></td>
361: <td width=29 bgcolor="white" class="Normal"> <p>565</p></td>
362: <td width=26 bgcolor="white" class="Normal"> <p>11</p></td>
363: <td width=30 bgcolor="white" class="Normal"> <p>2.24</p></td>
364: <td width=31 bgcolor="white" class="Normal"> <p>243</p></td>
365: <td width=29 bgcolor="white" class="Normal"> <p>0</p></td>
366: <td width=36 bgcolor="white" class="Normal"> <p>3.6</p></td>
367: <td width=32 bgcolor="white" class="Normal"> <p>0.57</p></td>
368: <td width=26 bgcolor="white" class="Normal"> <p>1.9</p></td>
369: <td width=33 bgcolor="white" class="Normal"> <p>2.0</p></td>
370: <td width=35 bgcolor="white" class="Normal"> <p>-0.06</p></td>
371: <td width=37 bgcolor="white" class="Normal"> <p>-0.03</p></td>
372: </tr>
373: <tr>
374: <td width=21 class="Normal"> <p>9</p></td>
375: <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
376: class=MsoHyperlink><span style='color:blue'>Numerical Value of Fraction</span></span></span></span></p></td>
377: <td width=37 bgcolor="white" class="Normal"> <p>256</p></td>
378: <td width=29 bgcolor="white" class="Normal"> <p>268</p></td>
379: <td width=26 bgcolor="white" class="Normal"> <p>4</p></td>
380: <td width=30 bgcolor="white" class="Normal"> <p>1.05</p></td>
381: <td width=31 bgcolor="white" class="Normal"> <p>256</p></td>
382: <td width=29 bgcolor="white" class="Normal"> <p>0</p></td>
383: <td width=36 bgcolor="white" class="Normal"> <p>0.0</p></td>
384: <td width=32 bgcolor="white" class="Normal"> <p>0.04</p></td>
385: <td width=26 bgcolor="white" class="Normal"> <p>0.2</p></td>
386: <td width=33 bgcolor="white" class="Normal"> <p>3.4</p></td>
387: <td width=35 bgcolor="white" class="Normal"> <p>0.01</p></td>
388: <td width=37 bgcolor="white" class="Normal"> <p>0.00</p></td>
389: </tr>
390: <tr>
391: <td width=21 class="Normal"> <p>10</p></td>
392: <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
393: class=MsoHyperlink><span style='color:blue'>Units</span></span></span></span></p></td>
394: <td width=37 bgcolor="white" class="Normal"> <p>256</p></td>
395: <td width=29 bgcolor="white" class="Normal"> <p>1116</p></td>
396: <td width=26 bgcolor="white" class="Normal"> <p>20</p></td>
397: <td width=30 bgcolor="white" class="Normal"> <p>4.36</p></td>
398: <td width=31 bgcolor="white" class="Normal"> <p>246</p></td>
399: <td width=29 bgcolor="white" class="Normal"> <p>0</p></td>
400: <td width=36 bgcolor="white" class="Normal"> <p>3.9</p></td>
401: <td width=32 bgcolor="white" class="Normal"> <p>0.78</p></td>
402: <td width=26 bgcolor="white" class="Normal"> <p>4.2</p></td>
403: <td width=33 bgcolor="white" class="Normal"> <p>1.9</p></td>
404: <td width=35 bgcolor="white" class="Normal"> <p>0.18</p></td>
405: <td width=37 bgcolor="white" class="Normal"> <p>0.03</p></td>
406: </tr>
407: <tr>
408: <td width=21 class="Normal"> <p>11</p></td>
409: <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
410: class=MsoHyperlink><span style='color:blue'>Vector versus Scalar</span></span></span></span></p></td>
411: <td width=37 bgcolor="white" class="Normal"> <p>254</p></td>
412: <td width=29 bgcolor="white" class="Normal"> <p>749</p></td>
413: <td width=26 bgcolor="white" class="Normal"> <p>11</p></td>
414: <td width=30 bgcolor="white" class="Normal"> <p>2.95</p></td>
415: <td width=31 bgcolor="white" class="Normal"> <p>251</p></td>
416: <td width=29 bgcolor="white" class="Normal"> <p>0</p></td>
417: <td width=36 bgcolor="white" class="Normal"> <p>1.2</p></td>
418: <td width=32 bgcolor="white" class="Normal"> <p>0.66</p></td>
419: <td width=26 bgcolor="white" class="Normal"> <p>2.2</p></td>
420: <td width=33 bgcolor="white" class="Normal"> <p>1.1</p></td>
421: <td width=35 bgcolor="white" class="Normal"> <p>-0.05</p></td>
422: <td width=37 bgcolor="white" class="Normal"> <p>-0.05</p></td>
423: </tr>
424: <tr>
425: <td width=21 class="Normal"> <p>12</p></td>
426: <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
427: class=MsoHyperlink><span style='color:blue'>Adding Vectors</span></span></span></span></p></td>
428: <td width=37 bgcolor="white" class="Normal"> <p>253</p></td>
429: <td width=29 bgcolor="white" class="Normal"> <p>1026</p></td>
430: <td width=26 bgcolor="white" class="Normal"> <p>20</p></td>
431: <td width=30 bgcolor="white" class="Normal"> <p>4.06</p></td>
432: <td width=31 bgcolor="white" class="Normal"> <p>250</p></td>
433: <td width=29 bgcolor="white" class="Normal"> <p>0</p></td>
434: <td width=36 bgcolor="white" class="Normal"> <p>1.2</p></td>
435: <td width=32 bgcolor="white" class="Normal"> <p>0.76</p></td>
436: <td width=26 bgcolor="white" class="Normal"> <p>3.6</p></td>
437: <td width=33 bgcolor="white" class="Normal"> <p>1.8</p></td>
438: <td width=35 bgcolor="white" class="Normal"> <p>0.14</p></td>
439: <td width=37 bgcolor="white" class="Normal"> <p>0.00</p></td>
440: </tr>
441: <tr>
442: <td width=21 class="Normal"> <p>13</p></td>
443: <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
444: class=MsoHyperlink><span style='color:blue'>Proximity</span></span></span></span></p></td>
445: <td width=37 bgcolor="white" class="Normal"> <p>249</p></td>
446: <td width=29 bgcolor="white" class="Normal"> <p>663</p></td>
447: <td width=26 bgcolor="white" class="Normal"> <p>19</p></td>
448: <td width=30 bgcolor="white" class="Normal"> <p>2.66</p></td>
449: <td width=31 bgcolor="white" class="Normal"> <p>239</p></td>
450: <td width=29 bgcolor="white" class="Normal"> <p>1</p></td>
451: <td width=36 bgcolor="white" class="Normal"> <p>3.6</p></td>
452: <td width=32 bgcolor="white" class="Normal"> <p>0.64</p></td>
453: <td width=26 bgcolor="white" class="Normal"> <p>2.3</p></td>
454: <td width=33 bgcolor="white" class="Normal"> <p>2.8</p></td>
455: <td width=35 bgcolor="white" class="Normal"> <p>0.11</p></td>
456: <td width=37 bgcolor="white" class="Normal"> <p>-0.10</p></td>
457: </tr>
458: </table>
459: <p><span style='font-size:14.0pt'><b>Fig. 3.2.2</b></span><span
460: style='font-size:14.0pt'>: Statistics table includes general statistics of every
461: problem of the course</span></p>
462: <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:
463: line'> problems is distinguished as a separate problem. The <i>multi-instance</i></span><span
464: style='font-size:11.0pt;layout-grid-mode:line'> problem is also considered separately,
465: because a particular problem or one part of it might be used in different maps.
466: Finally, the array, which includes all computed information from all students,
467: sorted according to the problem order, underlying in homework sets order. Therefore,
468: in this step we can compute the following statistical information:</span></p>
469: <p> <span style='font-size:11.0pt;
470: layout-grid-mode:line'>1.<span style='font:7.0pt "Times New Roman"'>
471: </span></span> <span style='font-size:11.0pt;layout-grid-mode:line'><b>#Stdnts</b></span><span
472: style='font-size:11.0pt;layout-grid-mode:line'>: Total
473: number of students who take a look at the problem.(Let #Stdnts is equal to <i>n</i></span><span style='font-size:
474: 11.0pt;layout-grid-mode:line'>)</span></p>
475: <p> <span style='font-size:11.0pt;
476: layout-grid-mode:line'>2.<span style='font:7.0pt "Times New Roman"'>
477: </span></span> <span style='font-size:11.0pt;layout-grid-mode:line'><b>Tries:</b></span><span
478: style='font-size:11.0pt;layout-grid-mode:line'>
479: Total number of tries to solve the problem (</span><span style='font-size:11.0pt'>
480: <img width=28 height=34
481: src="Session%20Tw2_files/image057.png" v:shapes="_x0000_i1043"> where <i><sub>
482: <img width=12 height=18
483: src="Session%20Tw2_files/image060.png" v:shapes="_x0000_i1044"> </sub></i></span><span style='font-size:11.0pt'>denote
484: a student try<span style='layout-grid-mode:line'>).</span></span></p>
485: <p> <span style='font-size:11.0pt;
486: layout-grid-mode:line'>3.<span style='font:7.0pt "Times New Roman"'>
487: </span></span> <span style='font-size:11.0pt;layout-grid-mode:line'><b>Mod:
488: </b></span><span style='font-size:11.0pt;layout-grid-mode:line'>
489: Mode, </span><span style='font-size:11.0pt'>Maximum Number of Tries for solving
490: the problem.</span></p>
491: <p> <span style='font-size:11.0pt;
492: layout-grid-mode:line'>4.<span style='font:7.0pt "Times New Roman"'>
493: </span></span> <span style='font-size:11.0pt'><b>Mean:</b></span><span
494: style='font-size:11.0pt'> Average Number
495: of the Tries. </span></p>
496: <p><span style='font-size:11.0pt'> <img width=11 height=13
497: src="Session%20Tw2_files/image063.png" v:shapes="_x0000_i1045"> = <img width=38 height=34
498: src="Session%20Tw2_files/image066.png" v:shapes="_x0000_i1046"> </span></p>
499: <p> 5.<span style='font:7.0pt "Times New Roman"'> </span>
500: <span style='font-size:11.0pt;layout-grid-mode:line'><b>#YES:</b></span><span
501: style='font-size:11.0pt'> Number of students
502: solved the problem correctly.</span></p>
503: <p> <span style='font-size:11.0pt'>6.<span
504: style='font:7.0pt "Times New Roman"'> </span></span> <span
505: style='font-size:11.0pt'><b>#yes:</b></span><span style='font-size:11.0pt'>
506: Number of students solved the problem by override. </span></p>
507: <p><span style='font-size:11.0pt'>Sometimes, a student gets a correct answer after
508: talking with the instructor. This type of correct answer is called Òcorrected
509: by override.</span></p>
510: <p> <span style='font-size:11.0pt'>7.<span
511: style='font:7.0pt "Times New Roman"'> </span></span> <span
512: style='font-size:11.0pt'><b>%Wrng:</b></span><span style='font-size:11.0pt'>
513: Percentage of students tried to solve the problem but still incorrect. </span></p>
514: <p><span style='font-size:11.0pt'> <img width=137 height=31
515: src="Session%20Tw2_files/image069.png" v:shapes="_x0000_i1047"> </span></p>
516: <p> <span style='font-size:11.0pt'>8.<span
517: style='font:7.0pt "Times New Roman"'> </span></span> <span
518: style='font-size:11.0pt'><b>S.D.:</b></span><span style='font-size:11.0pt'>
519: <i>Standard Deviation</i></span><span style='font-size:11.0pt'> of the studentsÕ
520: tries. </span></p>
521: <p><span style='font-size:11.0pt'> <img width=98 height=40
522: src="Session%20Tw2_files/image072.png" v:shapes="_x0000_i1048"> </span></p>
523: <p> <span style='font-size:11.0pt'>9.<span
524: style='font:7.0pt "Times New Roman"'> </span></span> <span
525: style='font-size:11.0pt'><b>Skew.:</b></span><span style='font-size:11.0pt'>
526: <i>Skewness</i></span><span
527: style='font-size:11.0pt'> of the studentsÕ tries. </span></p>
528: <p><span style='font-size:11.0pt'> <img width=194 height=76
529: src="Session%20Tw2_files/image075.png" v:shapes="_x0000_i1049"> </span></p>
530: <p> <span style='font-size:11.0pt'>10.<span
531: style='font:7.0pt "Times New Roman"'> </span></span> <span
532: style='font-size:11.0pt'><b>DoDiff:</b></span><span style='font-size:11.0pt'>
533: <i>Degree of Difficulty</i></span><span
534: style='font-size:11.0pt'> of the problem. </span></p>
535: <p><span style='font-size:11.0pt'> <img width=100 height=38
536: src="Session%20Tw2_files/image078.png" v:shapes="_x0000_i1050"> </span></p>
537: <p><span style='font-size:11.0pt'>As you see Degree of Difficulty is always between
538: 0 and 1. This is a good factor for an instructor to determine whether a problem
539: is difficult, and what is the degree of this difficulty. Thus, DoDiff of each
540: problem is saved in its meta data.</span></p>
541: <p> <span style='font-size:11.0pt'>11.<span
542: style='font:7.0pt "Times New Roman"'> </span></span> <span
543: style='font-size:11.0pt'><b>Dis.F.:</b></span><span style='font-size:11.0pt'>
544: <i>Discrimination Factor</i></span><a href="#_ftn2" name="_ftnref2"
545: title=""><span class=MsoFootnoteReference><span style='font-size:11.0pt'> [2]
546: </span></span></a><span
547: style='font-size:11.0pt'> is an standard for evaluating how much a problem discriminates
548: between the upper and the lower students. First, all of the students are
549: sorted according to a criterion. Then, %27 of upper students and %27 lower students
550: are selected from the sorted students applying the mentioned criterion. Finally
551: we obtain the Discrimination Factor from the following difference:</span></p>
552: <p><span style='font-size:11.0pt'><i>Applied a criterion in %27 upper students
553: - Applied the same Criterion in %27 lower students.</i></span></p>
554: <p class=MsoBodyTextIndent2 align=left style='text-align:left;line-height:normal'>Discrimination
555: Factor is a number in interval [-1,1]. If this number is close to 1, it shows
556: that only upper students have solved this problem. If it is close to 0 it shows
557: that the upper students and the lowers are approximately the same in solving
558: the problem. If this number is negative, it shows that the lower students have
559: more successes in solving the problem, and thus this problem is very poor in
560: discriminating the upper and lower students.</p>
561: <p><span style='font-size:11.0pt'>In lonstatistics.pm we compute the Discrimination
562: Factor from two criteria:</span></p>
563: <p><span style='font-size:11.0pt'><i>1st Criterion </i></span><span style='font-size:11.0pt'>for
564: Sorting the Students: <img width=138 height=41
565: src="Session%20Tw2_files/image081.png" v:shapes="_x0000_i1051"> </span></p>
566: <p><span style='font-size:11.0pt'><i>2nd Criterion</i></span><span style='font-size:11.0pt'>
567: for Sorting the Students: <img width=87 height=41
568: src="Session%20Tw2_files/image084.png" v:shapes="_x0000_i1052"> </span></p>
569: <p> <span style='font-size:11.0pt;
570: font-family:Symbol;layout-grid-mode:line'>á<span style='font:7.0pt "Times New Roman"'>
571: </span></span> <span style='font-size:11.0pt;layout-grid-mode:line'><b>Change
572: the stats table sorting </b></span></p>
573: <p><span style='font-size:11.0pt;layout-grid-mode:line'>As you see in Fig. 3.2.
574: 2, all headers in the stats table are buttons that change the order of the table.
575: Users can change increasingly or decreasingly every column of the table. First
576: the user select the Ò<i>ascending</i></span><span
577: style='font-size:11.0pt;layout-grid-mode:line'>Ó or Ò<i>descending</i></span><span
578: style='font-size:11.0pt;layout-grid-mode:line'>Ó option, then he/she can change
579: the order of the table with clicking the header of his/her interested header.
580: If the user changes the order the table, all information is shown in one table,
581: each row corresponds to a particular problem. If the user selects the first
582: column, Òhomework set orderÓ, the information is shown in different tables,
583: each table corresponds to a particular homework set. </span></p>
584: <p> <span style='font-size:11.0pt;
585: font-family:Symbol;layout-grid-mode:line'>á<span style='font:7.0pt "Times New Roman"'>
586: </span></span> <span style='font-size:11.0pt;layout-grid-mode:line'><b>Graphical
587: chart </b></span></p>
588: <p><span style='font-size:11.0pt;layout-grid-mode:line'>Two important features
589: in this page might be seen through the graphical charts. That is, a user could
590: see the content of Ò%wrongÓ column and Òdegree of difficulty of problemsÓ in
591: the graphical chart as is shown in Fig. 3.2. 3 and 4 for homework set 1 in course
592: PHY183 SS02. These graphical charts are produced dynamically by calling a CGI
593: scripts, (graph.gif) which is located in /home/httpd/cgi-bin/</span></p>
594: <p> <img width=231 height=173
595: src="Session%20Tw2_files/image086.jpg" v:shapes="_x0000_i1053"> <span
596: style='layout-grid-mode:line'> <img width=230 height=170
597: src="Session%20Tw2_files/image088.jpg" v:shapes="_x0000_i1054"> </span></p>
598: <p><b>Fig. 3.2. 3</b><span
599: style='font-weight:normal'>: Degree of difficulty graph
600: </span><b>Fig. 3.2. 4</b><span style='font-weight:normal'>: %Wrong graph</span></p>
601: <h4 style='line-height:150%'><span style='font-size:12.0pt;font-family:Arial;
602: layout-grid-mode:line'> </span></h4>
603: <h3><a name="_Toc421867141"><span style='layout-grid-mode:line'>Problem Analysis</span></a></h3>
604: <p><span style='font-size:11.0pt'>Conceptual option response problems, in which
605: the students are given several concepts that are randomly assigned to each student,
606: are more difficult than numerical simple problems. Instructors usually
607: want to see the studentsÕ tries according to every particular concept separately.
608: ÒProblem AnalysisÓ button provides all response option problems in one table
609: as follows in the <b>Fig. 3.2.5.</b></span><span style='font-size:11.0pt'> </span></p>
610: <div style='border:solid windowtext .5pt;padding:1.0pt 0in 1.0pt 4.0pt'>
611: <p style='border:none;padding:0in;'><span style='font-size:11.0pt'>Total number
612: of students: 263</span></p>
613: <p style='border:none;padding:0in;'><b>Select number of intervals</b><span style='font-weight:normal'>
614: <img width=53 height=18
615: src="Session%20Tw2_files/image091.png" v:shapes="_x0000_i1055"> </span></p>
616: <p style='border:none;padding:0in;'><b>Option Response Problems</b><span
617: style='font-weight:normal'> </span><b>in course PHY183 SS02:</b></p>
618: </div>
619: <table border=1 cellspacing=0 cellpadding=0>
620: <tr>
621: <td width=15 class="Normal"> <p align=center style='text-align:center'><b>#
622: </b></p></td>
623: <td width=83 class="Normal"> <p align=center style='text-align:center'><b>Problem
624: Title </b></p></td>
625: <td width=298 class="Normal"> <p align=center style='text-align:center'><b>Resource
626: </b></p></td>
627: <td width=77 class="Normal"> <p align=center style='text-align:center'><b>Address
628: </b></p></td>
629: </tr>
630: <tr>
631: <td width=15 class="Normal"> <p>1 </p></td>
632: <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
633: class=MsoHyperlink><span style='color:blue'>Numbers</span></span></span> </p></td>
634: <td width=298 bgcolor="white" class="Normal"> <p>/res/msu/physicslib/msuphysicslib/01_Math_1/msu-prob10.problem
635: </p></td>
636: <td width=77 class="Normal"> <p> <img width=72 height=23
637: src="Session%20Tw2_files/image094.png" v:shapes="_x0000_i1056"> </p></td>
638: </tr>
639: <tr>
640: <td width=15 class="Normal"> <p>2 </p></td>
641: <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
642: class=MsoHyperlink><span style='color:blue'>Speed</span></span></span> </p></td>
643: <td width=298 bgcolor="white" class="Normal"> <p>/res/msu/physicslib/msuphysicslib/03_Units_Scaling/msu-prob22.problem
644: </p></td>
645: <td width=77 class="Normal"> <p> <img width=72 height=23
646: src="Session%20Tw2_files/image097.png" v:shapes="_x0000_i1057"> </p></td>
647: </tr>
648: <tr>
649: <td width=15 class="Normal"> <p>3 </p></td>
650: <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
651: class=MsoHyperlink><span style='color:blue'>Units</span></span></span> </p></td>
652: <td width=298 bgcolor="white" class="Normal"> <p>/res/msu/physicslib/msuphysicslib/03_Units_Scaling/msu-prob17.problem
653: </p></td>
654: <td width=77 class="Normal"> <p> <img width=72 height=23
655: src="Session%20Tw2_files/image100.png" v:shapes="_x0000_i1058"> </p></td>
656: </tr>
657: <tr>
658: <td width=15 class="Normal"> <p>4 </p></td>
659: <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
660: class=MsoHyperlink><span style='color:blue'>Vector versus Scalar</span></span></span>
661: </p></td>
662: <td width=298 bgcolor="white" class="Normal"> <p>/res/msu/physicslib/msuphysicslib/06_Vectors_Scalars/msu-prob07.problem
663: </p></td>
664: <td width=77 class="Normal"> <p> <img width=72 height=23
665: src="Session%20Tw2_files/image103.png" v:shapes="_x0000_i1059"> </p></td>
666: </tr>
667: <tr>
668: <td width=15 class="Normal"> <p>5 </p></td>
669: <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
670: class=MsoHyperlink><span style='color:blue'>Adding Vectors</span></span></span>
671: </p></td>
672: <td width=298 bgcolor="white" class="Normal"> <p>/res/msu/physicslib/msuphysicslib/06_Vectors_Scalars/msu-prob10.problem
673: </p></td>
674: <td width=77 class="Normal"> <p> <img width=72 height=23
675: src="Session%20Tw2_files/image106.png" v:shapes="_x0000_i1060"> </p></td>
676: </tr>
677: <tr>
678: <td width=15 class="Normal"> <p>6 </p></td>
679: <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
680: class=MsoHyperlink><span style='color:blue'>Traveling Car</span></span></span>
681: </p></td>
682: <td width=298 bgcolor="white" class="Normal"> <p>/res/msu/physicslib/msuphysicslib/05_1D_Motion/msu-prob16.problem
683: </p></td>
684: <td width=77 class="Normal"> <p> <img width=59 height=23
685: src="Session%20Tw2_files/image109.png" v:shapes="_x0000_i1061"> </p></td>
686: </tr>
687: <tr>
688: <td width=15 class="Normal"> <p>7 </p></td>
689: <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
690: class=MsoHyperlink><span style='color:blue'>Atwood Machine</span></span></span>
691: </p></td>
692: <td width=298 bgcolor="white" class="Normal"> <p>/res/msu/kashy/Testing/randomlabel/atwood3T2M.problem
693: </p></td>
694: <td width=77 class="Normal"> <p> <img width=63 height=23
695: src="Session%20Tw2_files/image112.png" v:shapes="_x0000_i1062"> </p></td>
696: </tr>
697: <tr>
698: <td width=15 class="Normal"> <p>8 </p></td>
699: <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
700: class=MsoHyperlink><span style='color:blue'>Sliding mass concepts</span></span></span>
701: </p></td>
702: <td width=298 bgcolor="white" class="Normal"> <p>/res/msu/physicslib/msuphysicslib/10_Motion_W_Friction/msu-prob32.problem
703: </p></td>
704: <td width=77 class="Normal"> <p> <img width=59 height=23
705: src="Session%20Tw2_files/image115.png" v:shapes="_x0000_i1063"> </p></td>
706: </tr>
707: <tr>
708: <td width=15 class="Normal"> <p>9 </p></td>
709: <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
710: class=MsoHyperlink><span style='color:blue'>Work, Power, Energy Concepts</span></span></span>
711: </p></td>
712: <td width=298 bgcolor="white" class="Normal"> <p>/res/msu/physicslib/msuphysicslib/12_Work_Power_Energy/msu-prob27.problem
713: </p></td>
714: <td width=77 class="Normal"> <p> <img width=68 height=23
715: src="Session%20Tw2_files/image118.png" v:shapes="_x0000_i1064"> </p></td>
716: </tr>
717: <tr>
718: <td width=15 class="Normal"> <p>10 </p></td>
719: <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
720: class=MsoHyperlink><span style='color:blue'>Bead on a Wire</span></span></span>
721: </p></td>
722: <td width=298 bgcolor="white" class="Normal"> <p>/res/msu/physicslib/msuphysicslib/13_EnergyConservation/msu-prob32.problem
723: </p></td>
724: <td width=77 class="Normal"> <p> <img width=63 height=23
725: src="Session%20Tw2_files/image121.png" v:shapes="_x0000_i1065"> </p></td>
726: </tr>
727: <tr>
728: <td width=15 class="Normal"> <p>11 </p></td>
729: <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
730: class=MsoHyperlink><span style='color:blue'>Atwood Machine</span></span></span>
731: </p></td>
732: <td width=298 bgcolor="white" class="Normal"> <p>/res/msu/physicslib/msuphysicslib/20_Rot2_E_Trq_Accel/msu-prob23.problem
733: </p></td>
734: <td width=77 class="Normal"> <p> <img width=63 height=23
735: src="Session%20Tw2_files/image124.png" v:shapes="_x0000_i1066"> </p></td>
736: </tr>
737: <tr>
738: <td width=15 class="Normal"> <p>12 </p></td>
739: <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
740: class=MsoHyperlink><span style='color:blue'>Flinstone Bowling</span></span></span>
741: </p></td>
742: <td width=298 bgcolor="white" class="Normal"> <p>/res/msu/physicslib/msuphysicslib/21_Rot3_AngMom_Roll/msu-prob38.problem
743: </p></td>
744: <td width=77 class="Normal"> <p> <img width=63 height=23
745: src="Session%20Tw2_files/image127.png" v:shapes="_x0000_i1067"> </p></td>
746: </tr>
747: <tr>
748: <td width=15 class="Normal"> <p>13 </p></td>
749: <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
750: class=MsoHyperlink><span style='color:blue'>Boat on Pond</span></span></span>
751: </p></td>
752: <td width=298 bgcolor="white" class="Normal"> <p>/res/msu/physicslib/msuphysicslib/32_Fluids1_Pascal_Arch/msu-prob12.problem
753: </p></td>
754: <td width=77 class="Normal"> <p> <img width=68 height=23
755: src="Session%20Tw2_files/image130.png" v:shapes="_x0000_i1068"> </p></td>
756: </tr>
757: <tr>
758: <td width=15 class="Normal"> </td>
759: <td width=83 bgcolor="white" class="Normal"> <p align=center style='text-align:center'>É</p></td>
760: <td width=298 bgcolor="white" class="Normal"> <p align=center style='text-align:center'>É</p></td>
761: <td width=77 class="Normal"> <p align=center style='text-align:center'>É</p></td>
762: </tr>
763: </table>
764: <p><span style='font-size:11.0pt'><b>Fig. 3.2.5</b></span><span
765: style='font-size:11.0pt'>: Option response problems in course PHY183 SS02</span></p>
766: <p><b>Fig. 3.2.5</b><span style='font-weight:normal'> includes a table, which
767: shows the title of every option response problem in the first column. This title
768: has a link to the original html page of the problem. In the second column
769: the source address of the problem is shown. Third column of this table includes
770: a button to analyze the studentsÕ data on this particular option response problem.
771: When this button is clicked, all data about this problem is <i>restored</i></span>,
772: for every student. Different versions of studentsÕ submissions are evaluated.
773: The results are presented in a graphical chart as well as a numerical table.
774: For example, if we select the analysis of <b>/res/msu/kashy/Testing/randomlabel/atwood3T2M.problem</b></p>
775: <p> <span style='position:
776: relative;z-index:0'><span style='position:absolute;left:-37px;top:-32px;
777: width:248px;height:174px'> <table cellpadding=0 cellspacing=0> <tr> <td width=249 height=174 align=left valign=top bgcolor=white class="Normal"
778: style='border:.75pt solid black;vertical-align:top;background:white'><span
779: style='position:absolute;z-index:1'>
780: <table cellpadding=0 cellspacing=0 width="100%">
781: <tr>
782: <td class="Normal"> <div v:shape="_x0000_s1026" style='padding:3.6pt 7.2pt 3.6pt 7.2pt'
783: class=shape>
784: <p class=FirstParagraph><span lang=PT-BR
785: style='font-size:9.0pt'>A frictionless, massless pulley is attached to the
786: ceiling, in a gravity field g. Mass Ma is greater than mass Mb. The
787: tensions Tx,Ty, Tz, and the constant g are magnitudes. (For each,
788: select: Greater than, Less than, Equal to, True, or False) </span></p>
789: <p class=FirstParagraph><span lang=PT-BR style='font-size:9.0pt'> <img width=96 height=114
790: src="Session%20Tw2_files/image132.jpg" v:shapes="_x0000_i1069"> <img width=125 height=120
791: src="Session%20Tw2_files/image135.png" v:shapes="_x0000_i1070"> </span></p>
792: </div></td>
793: </tr>
794: </table>
795: </span></td></tr> </table>
796: <p></p>
797: <br clear=all>
798: <p align=right style='text-align:right'> <span style='position:
799: absolute;z-index:1;left:0px;margin-left:229px;margin-top:97px;width:235px;
800: height:40px'> <table cellpadding=0 cellspacing=0> <tr> <td width=236 height=40 align=left valign=top bgcolor=white class="Normal" style='border:
801: .75pt solid white;vertical-align:top;background:white'><span
802: style='position:absolute;left:0pt;z-index:3'>
803: <table cellpadding=0 cellspacing=0 width="100%">
804: <tr>
805: <td class="Normal"> <div v:shape="_x0000_s1028" style='padding:3.6pt 7.2pt 3.6pt 7.2pt'
806: class=shape>
807: <p><span style='font-size:9.0pt'><b>Fig. 3.2.7</b></span><span
808: style='font-size:9.0pt'>: Graphical chart of student tries for </span></p>
809: <p><span style='font-size:9.0pt'>
810: Atwood Machine Problem
811: according </span></p>
812: <p><span style='font-size:9.0pt'>
813: to every concept in 1 interval time.</span></p>
814: </div></td>
815: </tr>
816: </table>
817: </span></td></tr> </table> <img width=203 height=150
818: src="Session%20Tw2_files/image137.png" v:shapes="_x0000_i1071">
819: <p></p>
820: <p><span style='font-size:9.0pt'><b>Fig. 3.2.6</b></span><span
821: style='font-size:9.0pt'>: Atwood Machine option response problem in HW3<b> </b></span></p>
822: <p><span style='font-size:11.0pt'>In addition, the data of studentsÕ tries
823: are shown in a table as you see in <b>Fig. 3.2.8</b></span><span
824: style='font-size:11.0pt'>. In the last row of the table you can see the time interval
825: of this data and the overall correct and wrong answers separately. If an
826: instructor wants to see the studentsÕ tries in different time intervals,
827: he/she could set the number of intervals from 1 to 7 time intervals, and
828: then recompute the analysis. </span></p>
829: <table border=1 cellspacing=0 cellpadding=0>
830: <tr>
831: <td width=10 class="Normal"> <p align=center style='text-align:center'><b>#
832: </b></p></td>
833: <td width=357 class="Normal"> <p align=center style='text-align:center'><b>Concept
834: </b></p></td>
835: <td width=38 class="Normal"> <p align=center style='text-align:center'><b>Correct
836: </b></p></td>
837: <td width=35 class="Normal"> <p align=center style='text-align:center'><b>Wrong
838: </b></p></td>
839: </tr>
840: <tr>
841: <td width=10 class="Normal"> <p>1</p></td>
842: <td width=357 bgcolor="white" class="Normal"> <p>Two masses have same
843: acceleration if the two the string does not stretch. </p></td>
844: <td width=38 bgcolor="white" class="Normal"> <p>1342 </p></td>
845: <td width=35 bgcolor="white" class="Normal"> <p>433 </p></td>
846: </tr>
847: <tr>
848: <td width=10 class="Normal"> <p>2</p></td>
849: <td width=357 bgcolor="white" class="Normal"> <p>Weight of the two masses
850: is greater than the tension of the string attached to the ceiling.
851: </p></td>
852: <td width=38 bgcolor="white" class="Normal"> <p>585 </p></td>
853: <td width=35 bgcolor="white" class="Normal"> <p>1190 </p></td>
854: </tr>
855: <tr>
856: <td width=10 class="Normal"> <p>3</p></td>
857: <td width=357 bgcolor="white" class="Normal"> <p>The top tension is equals
858: the two bottom tensions. (massless pulley) </p></td>
859: <td width=38 bgcolor="white" class="Normal"> <p>1263 </p></td>
860: <td width=35 bgcolor="white" class="Normal"> <p>512 </p></td>
861: </tr>
862: <tr>
863: <td width=10 class="Normal"> <p>4</p></td>
864: <td width=357 bgcolor="white" class="Normal"> <p>Tension holding the two
865: masses are equal if mass of pulley=0 </p></td>
866: <td width=38 bgcolor="white" class="Normal"> <p>1087 </p></td>
867: <td width=35 bgcolor="white" class="Normal"> <p>688 </p></td>
868: </tr>
869: <tr>
870: <td width=10 class="Normal"> <p>5</p></td>
871: <td width=357 bgcolor="white" class="Normal"> <p>Sub-System accelerates
872: upwards or downwards accordingly </p></td>
873: <td width=38 bgcolor="white" class="Normal"> <p>757 </p></td>
874: <td width=35 bgcolor="white" class="Normal"> <p>1018 </p></td>
875: </tr>
876: <tr>
877: <td width=10 class="Normal"> <p>6</p></td>
878: <td width=357 bgcolor="white" class="Normal"> <p>Center of mass accelerates
879: downward </p></td>
880: <td width=38 bgcolor="white" class="Normal"> <p>1354 </p></td>
881: <td width=35 bgcolor="white" class="Normal"> <p>421 </p></td>
882: </tr>
883: <tr>
884: <td width=10 class="Normal"> </td>
885: <td width=357 class="Normal"> <p><b>From:[Thu Jan 24 00:46:22 2002] To:
886: [Mon Feb 4 23:59:59 2002]</b></p></td>
887: <td width=38 class="Normal"> <p>6388</p></td>
888: <td width=35 class="Normal"> <p>4245</p></td>
889: </tr>
890: </table>
891: <p><span style='font-size:11.0pt'><b>Fig. 3.2.8</b></span><span
892: style='font-size:11.0pt'>: Table of student tries for Atwood Machine Problem according
893: to every concept in one time interval.</span></p>
894: <p> <span
895: style='position:relative;z-index:2'><span style='position:
896: absolute;left:-109px;top:-166px;width:341px;height:24px'> <img width=341
897: height=24 src="Session%20Tw2_files/image138.png" v:shapes="_x0000_s1027"> <img width=203 height=150
898: src="Session%20Tw2_files/image140.png" v:shapes="_x0000_i1072"> <img width=203 height=150
899: src="Session%20Tw2_files/image142.png" v:shapes="_x0000_i1073">
900: <p></p>
901: <table border=1 cellspacing=0 cellpadding=0>
902: <tr>
903: <td width=10 class="Normal"> <p align=center style='text-align:center'><b>#
904: </b></p></td>
905: <td width=357 class="Normal"> <p align=center style='text-align:center'><b>Concept
906: </b></p></td>
907: <td width=38 class="Normal"> <p align=center style='text-align:center'><b>Correct
908: </b></p></td>
909: <td width=35 class="Normal"> <p align=center style='text-align:center'><b>Wrong
910: </b></p></td>
911: </tr>
912: <tr>
913: <td width=10 class="Normal"> <p>1</p></td>
914: <td width=357 bgcolor="white" class="Normal"> <p>Two masses have same
915: acceleration if the two the string does not stretch. </p></td>
916: <td width=38 bgcolor="white" class="Normal"> <p>124 </p></td>
917: <td width=35 bgcolor="white" class="Normal"> <p>98 </p></td>
918: </tr>
919: <tr>
920: <td width=10 class="Normal"> <p>2</p></td>
921: <td width=357 bgcolor="white" class="Normal"> <p>Weight of the two masses
922: is greater than the tension of the string attached to the ceiling.
923: </p></td>
924: <td width=38 bgcolor="white" class="Normal"> <p>44 </p></td>
925: <td width=35 bgcolor="white" class="Normal"> <p>178 </p></td>
926: </tr>
927: <tr>
928: <td width=10 class="Normal"> <p>3</p></td>
929: <td width=357 bgcolor="white" class="Normal"> <p>The top tension is
930: equals the two bottom tensions. (massless pulley) </p></td>
931: <td width=38 bgcolor="white" class="Normal"> <p>142 </p></td>
932: <td width=35 bgcolor="white" class="Normal"> <p>80 </p></td>
933: </tr>
934: <tr>
935: <td width=10 class="Normal"> <p>4</p></td>
936: <td width=357 bgcolor="white" class="Normal"> <p>Tension holding the
937: two masses are equal if mass of pulley=0 </p></td>
938: <td width=38 bgcolor="white" class="Normal"> <p>125 </p></td>
939: <td width=35 bgcolor="white" class="Normal"> <p>97 </p></td>
940: </tr>
941: <tr>
942: <td width=10 class="Normal"> <p>5</p></td>
943: <td width=357 bgcolor="white" class="Normal"> <p>Sub-System accelerates
944: upwards or downwards accordingly </p></td>
945: <td width=38 bgcolor="white" class="Normal"> <p>64 </p></td>
946: <td width=35 bgcolor="white" class="Normal"> <p>158 </p></td>
947: </tr>
948: <tr>
949: <td width=10 class="Normal"> <p>6</p></td>
950: <td width=357 bgcolor="white" class="Normal"> <p>Center of mass accelerates
951: downward </p></td>
952: <td width=38 bgcolor="white" class="Normal"> <p>151 </p></td>
953: <td width=35 bgcolor="white" class="Normal"> <p>71 </p></td>
954: </tr>
955: <tr>
956: <td width=10 class="Normal"> </td>
957: <td width=357 class="Normal"> <p><b>From:[Thu Jan 24 00:46:22 2002]
958: To: [Wed Jan 30 00:23:10 2002]</b></p></td>
959: <td width=38 class="Normal"> <p>650</p></td>
960: <td width=35 class="Normal"> <p>682</p></td>
961: </tr>
962: </table>
963: <table border=1 cellspacing=0 cellpadding=0>
964: <tr>
965: <td width=10 class="Normal"> <p align=center style='text-align:center'><b>#
966: </b></p></td>
967: <td width=357 class="Normal"> <p align=center style='text-align:center'><b>Concept
968: </b></p></td>
969: <td width=38 class="Normal"> <p align=center style='text-align:center'><b>Correct
970: </b></p></td>
971: <td width=35 class="Normal"> <p align=center style='text-align:center'><b>Wrong
972: </b></p></td>
973: </tr>
974: <tr>
975: <td width=10 class="Normal"> <p>1</p></td>
976: <td width=357 bgcolor="white" class="Normal"> <p>Two masses have same
977: acceleration if the two the string does not stretch. </p></td>
978: <td width=38 bgcolor="white" class="Normal"> <p>1218 </p></td>
979: <td width=35 bgcolor="white" class="Normal"> <p>335 </p></td>
980: </tr>
981: <tr>
982: <td width=10 class="Normal"> <p>2</p></td>
983: <td width=357 bgcolor="white" class="Normal"> <p>Weight of the two masses
984: is greater than the tension of the string attached to the ceiling.
985: </p></td>
986: <td width=38 bgcolor="white" class="Normal"> <p>541 </p></td>
987: <td width=35 bgcolor="white" class="Normal"> <p>1012 </p></td>
988: </tr>
989: <tr>
990: <td width=10 class="Normal"> <p>3</p></td>
991: <td width=357 bgcolor="white" class="Normal"> <p>The top tension is
992: equals the two bottom tensions. (massless pulley) </p></td>
993: <td width=38 bgcolor="white" class="Normal"> <p>1121 </p></td>
994: <td width=35 bgcolor="white" class="Normal"> <p>432 </p></td>
995: </tr>
996: <tr>
997: <td width=10 class="Normal"> <p>4</p></td>
998: <td width=357 bgcolor="white" class="Normal"> <p>Tension holding the
999: two masses are equal if mass of pulley=0 </p></td>
1000: <td width=38 bgcolor="white" class="Normal"> <p>962 </p></td>
1001: <td width=35 bgcolor="white" class="Normal"> <p>591 </p></td>
1002: </tr>
1003: <tr>
1004: <td width=10 class="Normal"> <p>5</p></td>
1005: <td width=357 bgcolor="white" class="Normal"> <p>Sub-System accelerates
1006: upwards or downwards accordingly </p></td>
1007: <td width=38 bgcolor="white" class="Normal"> <p>693 </p></td>
1008: <td width=35 bgcolor="white" class="Normal"> <p>860 </p></td>
1009: </tr>
1010: <tr>
1011: <td width=10 class="Normal"> <p>6</p></td>
1012: <td width=357 bgcolor="white" class="Normal"> <p>Center of mass accelerates
1013: downward </p></td>
1014: <td width=38 bgcolor="white" class="Normal"> <p>1203 </p></td>
1015: <td width=35 bgcolor="white" class="Normal"> <p>350 </p></td>
1016: </tr>
1017: <tr>
1018: <td width=10 class="Normal"> </td>
1019: <td width=357 class="Normal"> <p><b>From:[Wed Jan 30 00:23:11 2002]
1020: To: [Mon Feb 4 23:59:59 2002]</b></p></td>
1021: <td width=38 class="Normal"> <p>5738</p></td>
1022: <td width=35 class="Normal"> <p>3563</p></td>
1023: </tr>
1024: </table>
1025: <p><span style='font-size:11.0pt'><b>Fig. 3.2.9</b></span><span
1026: style='font-size:11.0pt'>: Table of student tries for Atwood Machine Problem according
1027: to every concept in 2 times interval.</span></p>
1028: <p>In <b>Fig. 3.2.9</b><span style='font-weight:normal'>, number of studentsÕ
1029: tries tables and the graphical chart are shown in 2 different time intervals.
1030: An instructor would be able to check whether the students have more wrong
1031: answers during the first days of opening the homework set, and how many
1032: students have tried during the first or the second interval. Since the
1033: problems are individualized he/she might be able to see how many students
1034: have tried to solve the problem after communicating with each other and
1035: understanding the concept. In Fig. 3.2. 10 the charts and tables
1036: of studentsÕ tries are shown in 3 time intervals. So if the homework should
1037: be done in one week, an instructor would be able to observe the distribution
1038: of studentsÕ tries every day separately after choosing the 7 time intervals.</span></p>
1039: <p> <img width=151 height=150
1040: src="Session%20Tw2_files/image144.png" v:shapes="_x0000_i1074"> <img width=151 height=150
1041: src="Session%20Tw2_files/image146.png" v:shapes="_x0000_i1075"> <img width=149 height=150
1042: src="Session%20Tw2_files/image148.png" v:shapes="_x0000_i1076"> </p>
1043: <table border=1 cellspacing=0 cellpadding=0>
1044: <tr>
1045: <td width=10 class="Normal"> <p align=center style='text-align:center'><b>#
1046: </b></p></td>
1047: <td width=357 class="Normal"> <p align=center style='text-align:center'><b>Concept
1048: </b></p></td>
1049: <td width=38 class="Normal"> <p align=center style='text-align:center'><b>Correct
1050: </b></p></td>
1051: <td width=35 class="Normal"> <p align=center style='text-align:center'><b>Wrong
1052: </b></p></td>
1053: </tr>
1054: <tr>
1055: <td width=10 class="Normal"> <p>1</p></td>
1056: <td width=357 bgcolor="white" class="Normal"> <p>Two masses have same
1057: acceleration if the two the string does not stretch. </p></td>
1058: <td width=38 bgcolor="white" class="Normal"> <p>31 </p></td>
1059: <td width=35 bgcolor="white" class="Normal"> <p>30 </p></td>
1060: </tr>
1061: <tr>
1062: <td width=10 class="Normal"> <p>2</p></td>
1063: <td width=357 bgcolor="white" class="Normal"> <p>Weight of the two masses
1064: is greater than the tension of the string attached to the ceiling.
1065: </p></td>
1066: <td width=38 bgcolor="white" class="Normal"> <p>8 </p></td>
1067: <td width=35 bgcolor="white" class="Normal"> <p>53 </p></td>
1068: </tr>
1069: <tr>
1070: <td width=10 class="Normal"> <p>3</p></td>
1071: <td width=357 bgcolor="white" class="Normal"> <p>The top tension is
1072: equals the two bottom tensions. (massless pulley) </p></td>
1073: <td width=38 bgcolor="white" class="Normal"> <p>44 </p></td>
1074: <td width=35 bgcolor="white" class="Normal"> <p>17 </p></td>
1075: </tr>
1076: <tr>
1077: <td width=10 class="Normal"> <p>4</p></td>
1078: <td width=357 bgcolor="white" class="Normal"> <p>Tension holding the
1079: two masses are equal if mass of pulley=0 </p></td>
1080: <td width=38 bgcolor="white" class="Normal"> <p>32 </p></td>
1081: <td width=35 bgcolor="white" class="Normal"> <p>29 </p></td>
1082: </tr>
1083: <tr>
1084: <td width=10 class="Normal"> <p>5</p></td>
1085: <td width=357 bgcolor="white" class="Normal"> <p>Sub-System accelerates
1086: upwards or downwards accordingly </p></td>
1087: <td width=38 bgcolor="white" class="Normal"> <p>20 </p></td>
1088: <td width=35 bgcolor="white" class="Normal"> <p>41 </p></td>
1089: </tr>
1090: <tr>
1091: <td width=10 class="Normal"> <p>6</p></td>
1092: <td width=357 bgcolor="white" class="Normal"> <p>Center of mass accelerates
1093: downward </p></td>
1094: <td width=38 bgcolor="white" class="Normal"> <p>42 </p></td>
1095: <td width=35 bgcolor="white" class="Normal"> <p>19 </p></td>
1096: </tr>
1097: <tr>
1098: <td width=10 class="Normal"> </td>
1099: <td width=357 class="Normal"> <p><b>From:[Thu Jan 24 00:46:22 2002]
1100: To: [Mon Jan 28 00:30:53 2002]</b></p></td>
1101: <td width=38 class="Normal"> <p>177</p></td>
1102: <td width=35 class="Normal"> <p>189</p></td>
1103: </tr>
1104: </table>
1105: <table border=1 cellspacing=0 cellpadding=0>
1106: <tr>
1107: <td width=10 class="Normal"> <p align=center style='text-align:center'><b>#
1108: </b></p></td>
1109: <td width=357 class="Normal"> <p align=center style='text-align:center'><b>Concept
1110: </b></p></td>
1111: <td width=38 class="Normal"> <p align=center style='text-align:center'><b>Correct
1112: </b></p></td>
1113: <td width=35 class="Normal"> <p align=center style='text-align:center'><b>Wrong
1114: </b></p></td>
1115: </tr>
1116: <tr>
1117: <td width=10 class="Normal"> <p>1</p></td>
1118: <td width=357 bgcolor="white" class="Normal"> <p>Two masses have same
1119: acceleration if the two the string does not stretch. </p></td>
1120: <td width=38 bgcolor="white" class="Normal"> <p>692 </p></td>
1121: <td width=35 bgcolor="white" class="Normal"> <p>257 </p></td>
1122: </tr>
1123: <tr>
1124: <td width=10 class="Normal"> <p>2</p></td>
1125: <td width=357 bgcolor="white" class="Normal"> <p>Weight of the two masses
1126: is greater than the tension of the string attached to the ceiling.
1127: </p></td>
1128: <td width=38 bgcolor="white" class="Normal"> <p>321 </p></td>
1129: <td width=35 bgcolor="white" class="Normal"> <p>628 </p></td>
1130: </tr>
1131: <tr>
1132: <td width=10 class="Normal"> <p>3</p></td>
1133: <td width=357 bgcolor="white" class="Normal"> <p>The top tension is
1134: equals the two bottom tensions. (massless pulley) </p></td>
1135: <td width=38 bgcolor="white" class="Normal"> <p>690 </p></td>
1136: <td width=35 bgcolor="white" class="Normal"> <p>259 </p></td>
1137: </tr>
1138: <tr>
1139: <td width=10 class="Normal"> <p>4</p></td>
1140: <td width=357 bgcolor="white" class="Normal"> <p>Tension holding the
1141: two masses are equal if mass of pulley=0 </p></td>
1142: <td width=38 bgcolor="white" class="Normal"> <p>590 </p></td>
1143: <td width=35 bgcolor="white" class="Normal"> <p>359 </p></td>
1144: </tr>
1145: <tr>
1146: <td width=10 class="Normal"> <p>5</p></td>
1147: <td width=357 bgcolor="white" class="Normal"> <p>Sub-System accelerates
1148: upwards or downwards accordingly </p></td>
1149: <td width=38 bgcolor="white" class="Normal"> <p>399 </p></td>
1150: <td width=35 bgcolor="white" class="Normal"> <p>550 </p></td>
1151: </tr>
1152: <tr>
1153: <td width=10 class="Normal"> <p>6</p></td>
1154: <td width=357 bgcolor="white" class="Normal"> <p>Center of mass accelerates
1155: downward </p></td>
1156: <td width=38 bgcolor="white" class="Normal"> <p>703 </p></td>
1157: <td width=35 bgcolor="white" class="Normal"> <p>246 </p></td>
1158: </tr>
1159: <tr>
1160: <td width=10 class="Normal"> </td>
1161: <td width=357 class="Normal"> <p><b>From:[Mon Jan 28 00:30:54 2002]
1162: To: [Fri Feb 1 00:15:25 2002]</b></p></td>
1163: <td width=38 class="Normal"> <p>3395</p></td>
1164: <td width=35 class="Normal"> <p>2281</p></td>
1165: </tr>
1166: </table>
1167: <table border=1 cellspacing=0 cellpadding=0>
1168: <tr>
1169: <td width=10 class="Normal"> <p align=center style='text-align:center'><b>#
1170: </b></p></td>
1171: <td width=357 class="Normal"> <p align=center style='text-align:center'><b>Concept
1172: </b></p></td>
1173: <td width=38 class="Normal"> <p align=center style='text-align:center'><b>Correct
1174: </b></p></td>
1175: <td width=35 class="Normal"> <p align=center style='text-align:center'><b>Wrong
1176: </b></p></td>
1177: </tr>
1178: <tr>
1179: <td width=10 class="Normal"> <p>1</p></td>
1180: <td width=357 bgcolor="white" class="Normal"> <p>Two masses have same
1181: acceleration if the two the string does not stretch. </p></td>
1182: <td width=38 bgcolor="white" class="Normal"> <p>619 </p></td>
1183: <td width=35 bgcolor="white" class="Normal"> <p>147 </p></td>
1184: </tr>
1185: <tr>
1186: <td width=10 class="Normal"> <p>2</p></td>
1187: <td width=357 bgcolor="white" class="Normal"> <p>Weight of the two masses
1188: is greater than the tension of the string attached to the ceiling.
1189: </p></td>
1190: <td width=38 bgcolor="white" class="Normal"> <p>256 </p></td>
1191: <td width=35 bgcolor="white" class="Normal"> <p>510 </p></td>
1192: </tr>
1193: <tr>
1194: <td width=10 class="Normal"> <p>3</p></td>
1195: <td width=357 bgcolor="white" class="Normal"> <p>The top tension is
1196: equals the two bottom tensions. (massless pulley) </p></td>
1197: <td width=38 bgcolor="white" class="Normal"> <p>529 </p></td>
1198: <td width=35 bgcolor="white" class="Normal"> <p>237 </p></td>
1199: </tr>
1200: <tr>
1201: <td width=10 class="Normal"> <p>4</p></td>
1202: <td width=357 bgcolor="white" class="Normal"> <p>Tension holding the
1203: two masses are equal if mass of pulley=0 </p></td>
1204: <td width=38 bgcolor="white" class="Normal"> <p>465 </p></td>
1205: <td width=35 bgcolor="white" class="Normal"> <p>301 </p></td>
1206: </tr>
1207: <tr>
1208: <td width=10 class="Normal"> <p>5</p></td>
1209: <td width=357 bgcolor="white" class="Normal"> <p>Sub-System accelerates
1210: upwards or downwards accordingly </p></td>
1211: <td width=38 bgcolor="white" class="Normal"> <p>338 </p></td>
1212: <td width=35 bgcolor="white" class="Normal"> <p>428 </p></td>
1213: </tr>
1214: <tr>
1215: <td width=10 class="Normal"> <p>6</p></td>
1216: <td width=357 bgcolor="white" class="Normal"> <p>Center of mass accelerates
1217: downward </p></td>
1218: <td width=38 bgcolor="white" class="Normal"> <p>609 </p></td>
1219: <td width=35 bgcolor="white" class="Normal"> <p>157 </p></td>
1220: </tr>
1221: <tr>
1222: <td width=10 class="Normal"> </td>
1223: <td width=357 class="Normal"> <p><b>From:[Fri Feb 1 00:15:26 2002] To:
1224: [Mon Feb 4 23:59:59 2002]</b></p></td>
1225: <td width=38 class="Normal"> <p>2816</p></td>
1226: <td width=35 class="Normal"> <p>1775</p></td>
1227: </tr>
1228: </table>
1229: <p><b>Fig. 3.2. 10</b><span style='font-weight:normal'>: Table of student
1230: tries for Atwood Machine Problem according to every concept in 3 times
1231: interval.</span></p>
1232: <h3><a name="_Toc421867142">Student Assessment</a></h3>
1233: <p class=MsoBodyText2><span style='font-size:11.0pt'>This option provides
1234: some reports about the current educational situation of every student
1235: as you see in <b>Fig. 3.2.11</b></span><span style='font-size:11.0pt'>.
1236: A ÔYÕ show that the student has solved the problem and ÔNÕ shows his/her
1237: failure. A Ô-Ô denotes a unattempted problem. The numbers in the
1238: right column show the total number of tries of the student in solving
1239: the corresponding problems.</span></p>
1240: <form>
1241: <div style='border:solid windowtext .5pt;padding:1.0pt 0in 1.0pt 4.0pt'>
1242: <p style='border:none;padding:0in;'>Total number of students : 263<br>
1243: <br>
1244: <img width=68 height=23
1245: src="Session%20Tw2_files/image151.png" v:shapes="_x0000_i1077"> <br>
1246: <b>Select Map </b><span style='font-weight:normal'>
1247: <img width=215 height=18
1248: src="Session%20Tw2_files/image154.png" v:shapes="_x0000_i1078"> <br>
1249: </span><b>Select Section</b><span style='font-weight:normal'> <img width=89 height=18
1250: src="Session%20Tw2_files/image157.png" v:shapes="_x0000_i1079"> <br>
1251: </span><b>Select Student</b><span style='font-weight:normal'> <img width=89 height=18
1252: src="Session%20Tw2_files/image160.png" v:shapes="_x0000_i1080"> <br>
1253: <br>
1254: </span></p>
1255: <p style='border:none;padding:0in;'> <img width=93 height=23
1256: src="Session%20Tw2_files/image163.png" v:shapes="_x0000_i1081"> </p>
1257: </div>
1258: <table border=1 cellspacing=0 cellpadding=0>
1259: <tr>
1260: <td width=21 class="Normal"> <p align=center style='text-align:center;line-height:150%'><b>#
1261: </b></p></td>
1262: <td width=177 class="Normal"> <p align=center style='text-align:center;line-height:150%'><b>Set
1263: Title </b></p></td>
1264: <td width=122 class="Normal"> <p align=center style='text-align:center;line-height:150%'><b>Results
1265: </b></p></td>
1266: <td width=153 class="Normal"> <p align=center style='text-align:center;line-height:150%'><b>Tries
1267: </b></p></td>
1268: </tr>
1269: <tr>
1270: <td width=21 class="Normal"> <p style='line-height:150%'>1 </p></td>
1271: <td width=177 class="Normal"> <p style='line-height:150%'>msu/mmp/phy183.sequence
1272: </p></td>
1273: <td width=122 class="Normal"> </td>
1274: <td width=153 class="Normal"> </td>
1275: </tr>
1276: <tr>
1277: <td width=21 class="Normal"> <p style='line-height:150%'>2 </p></td>
1278: <td width=177 class="Normal"> <p style='line-height:150%'>msu/mmp/kap1/calckap1.sequence
1279: </p></td>
1280: <td width=122 class="Normal"> <p style='line-height:150%'><span style='font-size:8.0pt'>YYYYYYYYYYYYY
1281: </span></p></td>
1282: <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>
1283: </tr>
1284: <tr>
1285: <td width=21 class="Normal"> <p style='line-height:150%'>3 </p></td>
1286: <td width=177 class="Normal"> <p style='line-height:150%'>msu/mmp/kap2/calckap2.sequence
1287: </p></td>
1288: <td width=122 class="Normal"> <p style='line-height:150%'><span style='font-size:8.0pt'>YYNYYYYNNYYYYYYYY
1289: </span></p></td>
1290: <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>
1291: </tr>
1292: <tr>
1293: <td width=21 class="Normal"> <p style='line-height:150%'>4 </p></td>
1294: <td width=177 class="Normal"> <p style='line-height:150%'>msu/mmp/kap3/calckap3.sequence
1295: </p></td>
1296: <td width=122 class="Normal"> <p style='line-height:150%'><span style='font-size:8.0pt'>YYYYYYYYNYYYYYYYYYY
1297: </span></p></td>
1298: <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>
1299: </tr>
1300: <tr>
1301: <td width=21 class="Normal"> <p style='line-height:150%'>5 </p></td>
1302: <td width=177 class="Normal"> <p style='line-height:150%'>msu/mmp/kap4/calckap4.sequence
1303: </p></td>
1304: <td width=122 class="Normal"> <p style='line-height:150%'><span style='font-size:8.0pt'>NYYYYYYYYYYYYYYY
1305: </span></p></td>
1306: <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>
1307: </tr>
1308: <tr>
1309: <td width=21 class="Normal"> <p style='line-height:150%'>6 </p></td>
1310: <td width=177 class="Normal"> <p style='line-height:150%'>msu/mmp/kap5/calckap5.sequence
1311: </p></td>
1312: <td width=122 class="Normal"> <p style='line-height:150%'><span style='font-size:8.0pt'>YYYYYYYYYYY-YY
1313: </span></p></td>
1314: <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>
1315: </tr>
1316: <tr>
1317: <td width=21 class="Normal"> <p style='line-height:150%'>7 </p></td>
1318: <td width=177 class="Normal"> <p style='line-height:150%'>msu/mmp/kap6/calckap6.sequence
1319: </p></td>
1320: <td width=122 class="Normal"> <p style='line-height:150%'><span style='font-size:8.0pt'>YYYYYYYYYYYYYY
1321: </span></p></td>
1322: <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>
1323: </tr>
1324: <tr>
1325: <td width=21 class="Normal"> <p style='line-height:150%'>8 </p></td>
1326: <td width=177 class="Normal"> <p style='line-height:150%'>msu/mmp/kap7/calckap7.sequence
1327: </p></td>
1328: <td width=122 class="Normal"> <p style='line-height:150%'><span style='font-size:8.0pt'>YYYYYYYYYYYYYYYYYY
1329: </span></p></td>
1330: <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>
1331: </tr>
1332: <tr>
1333: <td width=21 class="Normal"> <p style='line-height:150%'>9 </p></td>
1334: <td width=177 class="Normal"> <p style='line-height:150%'>msu/mmp/kap8/calckap8.sequence
1335: </p></td>
1336: <td width=122 class="Normal"> <p style='line-height:150%'><span style='font-size:8.0pt'>YYYYYYYYYYYYYYY
1337: </span></p></td>
1338: <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>
1339: </tr>
1340: <tr>
1341: <td width=21 class="Normal"> <p style='line-height:150%'>10 </p></td>
1342: <td width=177 class="Normal"> <p style='line-height:150%'>msu/mmp/kap9/calckap9.sequence
1343: </p></td>
1344: <td width=122 class="Normal"> <p style='line-height:150%'><span style='font-size:8.0pt'>YYYYN-NYYNY
1345: </span></p></td>
1346: <td width=153 class="Normal"> <p style='line-height:150%'>1,1,1,2,1,,2,2,1,6,4</p></td>
1347: </tr>
1348: <tr>
1349: <td width=21 class="Normal"> <p style='line-height:150%'>11 </p></td>
1350: <td width=177 class="Normal"> <p style='line-height:150%'>msu/mmp/kap10/calckap10.sequence
1351: </p></td>
1352: <td width=122 class="Normal"> <p style='line-height:150%'><span style='font-size:8.0pt'>YYYYYYYYYYYY
1353: </span></p></td>
1354: <td width=153 class="Normal"> <p style='line-height:150%'>2,1,1,1,1,1,1,1,1,1,1,1</p></td>
1355: </tr>
1356: <tr>
1357: <td width=21 class="Normal"> <p style='line-height:150%'>12 </p></td>
1358: <td width=177 class="Normal"> <p style='line-height:150%'>msu/mmp/kap11/calckap11.sequence
1359: </p></td>
1360: <td width=122 class="Normal"> <p style='line-height:150%'>-----------------
1361: </p></td>
1362: <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>
1363: </tr>
1364: </table>
1365: <p><span style='layout-grid-mode:line'><b>Fig. 3.2. 5</b></span><span
1366: style='layout-grid-mode:line'>: A sample of a student homework results and tries</span></p>
1367: <p><span style='font-size:11.0pt;layout-grid-mode:line'>We plan to present
1368: several other reports in this page as well. Some student classification
1369: reports also would be depicted here.</span></p>
1370: <p><span style='font-size:11.0pt;layout-grid-mode:line'>In Òproblem statsÓ
1371: and Òstudent assessmentÓ pages, an instructor can limit the range of
1372: his/her information to a particular section or a particular homework
1373: set. So, an instructor would be able to load the statistics table
1374: or student tries in Òstudent assessmentÓ table to a particular map or
1375: section. </span><span style='font-size:11.0pt'>After changing the map
1376: or section, he/she would be able to see the results via the recalculating
1377: the computation on that page. </span><span style='font-size:11.0pt;
1378: font-family:Arial;layout-grid-mode:line'></span></p>
1379: <h3><a name="_Toc421867143"><span style='layout-grid-mode:line'>Future
1380: work, using activity.log to classify the students</span></a></h3>
1381: <p><span style='font-size:11.0pt'>The problem is whether we can find the
1382: good features for <i>classifying</i></span><span style='font-size:
1383: 11.0pt'> students? If so, we would be able to identify a <i>predictor</i></span><span
1384: style='font-size:11.0pt'> for any individual student after doing a couple of homework
1385: sets. With this information, we would be able to <i>help</i></span><span
1386: style='font-size:11.0pt'> a student use the resources better. <span style='layout-grid-mode:line'>As
1387: the first step of data mining stuff w</span>e want to make an initial
1388: effort to classify the students. </span></p>
1389: <p><span style='font-size:11.0pt'>Preprocessing and finding the useful
1390: student data and segmenting may be a difficult task. Internally, one
1391: part of this data is stored in a student directory:</span></p>
1392: <p><span style='font-size:11.0pt'> </span><span style='font-size:11.0pt;font-family:"Courier New"'>/</span><span
1393: style='font-size:9.0pt;font-family:"Courier New"'>home/httpd/lonUsers/<i>domain</i></span><span
1394: style='font-size:9.0pt;font-family:"Courier New"'>/<i>1st.char</i></span><span
1395: style='font-size:9.0pt;font-family:"Courier New"'>/<i>2nd.char</i></span><span
1396: style='font-size:9.0pt;font-family:"Courier New"'>/<i>3rd.char</i></span><span
1397: style='font-size:9.0pt;font-family:"Courier New"'>/<i>username</i></span><span
1398: style='font-size:9.0pt;font-family:"Courier New"'>/</span></p>
1399: <p class=MsoHeader><span style='font-size:11.0pt'>For example: /home/httpd/lonUsers/msu/m/i/n/minaeibi/</span></p>
1400: <p><span style='font-size:11.0pt;layout-grid-mode:line'>Since spring semester
1401: 2002, LON-CAPA has logged every activity of every student who has used</span><span style='font-size:11.0pt'>
1402: online educational resources and their recorded paths through the web.
1403: So another part of data is stored in Òactivity.logÓ which is located
1404: in course directory.</span></p>
1405: <p><span style='font-size:11.0pt'>The student data restored from .db files
1406: in student directory and is fetched into a hash table. The special hash
1407: keys Ò<i>keysÓ</i></span><span style='font-size:11.0pt'>, Ò<i>versionÓ</i></span><span
1408: style='font-size:11.0pt'> and Ò<i>timestampÓ</i></span><span style='font-size:
1409: 11.0pt'> were evaluated from the hash. The <i>version</i></span><span
1410: style='font-size:11.0pt'> will be equal to the total number of versions of the
1411: data that have been stored. The <i>timestamp</i></span><span style='font-size:
1412: 11.0pt'> attribute is the UNIX time the data was stored. <i>keys</i></span><span
1413: style='font-size:11.0pt'> is available in every historical section to list which
1414: keys were added or changed at a specific historical revision of a hash.
1415: We extract the features from a structured homework data, which is stored
1416: as particular URLÕs. For example the result of solving homeworkÕs problem
1417: by students could be extracted from </span><span style='font-size:9.0pt;
1418: font-family:"Courier New"'><i>resource.partid.solved</i></span><span
1419: style='font-size:11.0pt;font-family:"Courier New"'>, </span><span
1420: style='font-size:11.0pt'>the total number of the students for solving the problem
1421: could be extracted from </span><span style='font-size:9.0pt;font-family:
1422: "Courier New"'><i>resource.partid.tries</i></span><span style='font-size:11.0pt;
1423: font-family:"Courier New"'>,</span><span style='font-size:11.0pt'> and so forth.</span></p>
1424: <p><span style='font-size:11.0pt'>All data stored in activity.log includes
1425: <i>user name</i></span><span style='font-size:11.0pt'>, <i>time</i></span><span
1426: style='font-size:11.0pt'> and <i>resource URL</i></span><span style='font-size:
1427: 11.0pt'>. We can divide these data into six types of URLs, listed below, according
1428: to their importance for data mining: </span></p>
1429: <p style='line-height:150%'><span style='font-size:11.0pt'>1. <b><u>problems:</u></b></span><span
1430: style='font-size:11.0pt'> are the most useful data. i.e.<b><u> </u></b></span><span
1431: style='font-size:7.0pt'><b><u>msu/mmp/kap14/kap14.sequence___33___msu/mmp/kap14/problems/cd418a.problem</u></b></span>
1432: <br>
1433: <span style='font-size:11.0pt'>2. <b>html pages</b></span><span
1434: style='font-size:11.0pt'> to those are some links in the problems. i.e. </span><span
1435: style='font-size:7.0pt'><b>msu/mmp/kap14/kap14.sequence___5___msu/mmp/kap14/cd396.htm</b></span>
1436: <br>
1437: <span style='font-size:11.0pt'>3. <i>the images</i></span><span
1438: 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
1439: style='font-size:11.0pt'> .</span></p>
1440: <p style='line-height:150%'><span style='font-size:11.0pt'>4. <u>loncapa
1441: routines</u>: i.e. <u>/adm/navmaps,</u> or <u>/adm/roles,</u>
1442: or <u>/adm/logout</u>.<br>
1443: 5. <i><u>Posted data</u></i></span><span style='font-size:11.0pt'> by
1444: students: i.e. <i><u>resource.0.11.submission=27.11</u></i></span><span style='font-size:
1445: 11.0pt'> <br>
1446: 6. remote control gif files: i.e.: /res/adm/pages/v.gif </span></p>
1447: <p>So, activity.log usually grows fast, when students have more access
1448: to the educational resources. We have brought a sample of different
1449: types of data which are logged in activity.log after a preprocessing
1450: phase as follows: </p>
1451: <p><u>144) 1010955846: studentX --> /adm/navmaps</u> <br>
1452: <i>145) 1010955205: studentX --> /res/msu/mmp/kap14/picts/beta_eqn.gif</i><span
1453: style='font-style:normal'> <br>
1454: <u>146) 1010955685: studentX --> /adm/navmaps</u> <br>
1455: <u>147) 1010955988: studentX --> /adm/navmaps</u> <br>
1456: </span><span style='font-size:8.0pt'><b>148) 1010955998: studentX -->
1457: msu/mmp/kap14/kap14.sequence___5___msu/mmp/kap14/cd396.htm</b></span>
1458: <br>
1459: <i>149) 1010955999: studentX --> /res/msu/mmp/kap14/picts/velocity_eqn3.gif</i>
1460: <br>
1461: <i>150) 1010956000: studentX --> /res/msu/mmp/kap14/picts/time_eqn.gif</i><span style='font-style:normal'>
1462: <br>
1463: 151) 1010954609: studentX --> /res/adm/pages/grds.gif <br>
1464: </span><i>152) 1010954611: studentX --> /res/msu/mmp/wordproc.gif</i><span
1465: style='font-style:normal'> <br>
1466: 153) 1010954626: studentX --> /res/adm/pages/i.gif <br>
1467: </span><span style='font-size:8.0pt'><b>154) 1010955717: studentX -->
1468: msu/mmp/kap14/kap14.sequence___1___msu/mmp/kap14/cd392.htm</b></span>
1469: <br>
1470: <i>155) 1010955717: studentX --> /res/msu/mmp/kap14/picts/backsoun.gif</i>
1471: <br>
1472: <span style='font-size:8.0pt'><b>156) 1010955920: studentX --> msu/mmp/kap14/kap14.sequence___3___msu/mmp/kap14/cd394.htm</b></span>
1473: <br>
1474: <i>157) 1010955921: studentX --> /res/msu/mmp/gifs/demo.gif</i><span
1475: style='font-style:normal'> <br>
1476: 158) 1010956113: studentX --> /res/adm/pages/v.gif <br>
1477: 159) 1010954629: studentX --> /res/adm/pages/eval.gif <br>
1478: 160) 1010954631: studentX --> /res/adm/pages/back.gif <br>
1479: 161) 1010954632: studentX --> /res/adm/pages/b.gif <br>
1480: 162) 1010954633: studentX --> /res/adm/pages/r.gif <br>
1481: </span><span style='font-size:9.0pt'><b>163) 1010955754:</b></span><b>
1482: studentX --> msu/mmp/kap14/kap14.sequence___2___msu/mmp/kap14/cd393.htm</b><span
1483: style='font-weight:normal'> <br>
1484: <i>164) 1010955756: studentX --> /res/msu/mmp/kap14/picts/asound.jpg</i></span>
1485: <br>
1486: <i>165) 1010955762: studentX --> /res/msu/mmp/kap14/picts/sensor.jpg</i>
1487: <br>
1488: <i>166) 1010955999: studentX --> /res/msu/mmp/gifs2/example.gif</i><span
1489: style='font-style:normal'> <br>
1490: 173) 1010955687: studentX --> /res/adm/pages/u.gif <br>
1491: 174) 1010955688: studentX --> /res/adm/pages/s.gif <br>
1492: 175) 1010955688: studentX --> /res/adm/pages/e.gif <br>
1493: </span><span style='font-size:9.0pt'><b>176) 1010956528:</b></span><b>
1494: studentX</b><span
1495: style='font-size:9.0pt'><b> --> msu/mmp/kap14/kap14.sequence___33___msu/mmp/kap14/problems/cd418a.problem</b></span>
1496: <br>
1497: <i><u>177) Sent data</u></i> <br>
1498: <span style='font-size:9.0pt'><b><u>178) 1010956536: </u></b></span><b><u>studentX</u></b><span
1499: style='font-size:9.0pt'><u><b> --></b></u></span><b><u> </u></b><span
1500: style='font-size:9.0pt'><u><b>msu/mmp/kap14/kap14.sequence___33___msu/mmp/kap14/problems/cd418a.problem</b></u></span>
1501: <br>
1502: <i><u>179) Sent data HWVAL11=27.11</u></i> <br>
1503: <span style='font-size:9.0pt'><b><u>180) 1010956536:</u></b></span><b><u>
1504: studentX</u></b><span style='font-size:9.0pt'><u><b> --></b></u></span><b><u>
1505: </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>
1506: <br>
1507: <i><u>181) Sent data resource.0.11.submission=27.11</u></i> <br>
1508: <span style='font-size:9.0pt'><b><u>182) 1010956702: studentX -->
1509: msu/mmp/kap14/kap14.sequence___33___msu/mmp/kap14/problems/cd418a.problem</u></b></span>
1510: <br>
1511: <span style='font-size:11.0pt'><i><u>183) Sent data</u></i></span><span
1512: style='font-size:11.0pt'> <br>
1513: <i>184) 1010955921: studentX --> /res/msu/mmp/kap14/picts/areal.gif</i></span><span
1514: style='font-size:11.0pt'> <br>
1515: 185) 1010955731: studentX --> /res/adm/pages/n.gif <br>
1516: <br>
1517: </span></p>
1518: <p class=H5> <span
1519: style='font-size:11.0pt;font-family:Symbol;font-weight:normal'>á<span
1520: style='font:7.0pt "Times New Roman"'> </span></span>
1521: <span
1522: style='font-size:11.0pt;font-family:Arial'>Feature Extraction</span></p>
1523: <p class=MsoBodyText2>From these two types of student data which are stored
1524: by the LON-CAPA system, the features may be considered for classifying
1525: the students, are as follows: </p>
1526: <p> 1.<span style='font:7.0pt "Times New Roman"'>
1527: </span> Total number of correct answers. </p>
1528: <p> 2.<span style='font:7.0pt "Times New Roman"'>
1529: </span> Total number of tries for doing homework. </p>
1530: <p> 3.<span style='font:7.0pt "Times New Roman"'>
1531: </span> Time at which the student got the problem correct. Usually better
1532: students get the homework completed earlier.</p>
1533: <p> 4.<span style='font:7.0pt "Times New Roman"'>
1534: </span> Reading the material before attempting homework vs. attempting
1535: first and then read up on it.</p>
1536: <p> 5.<span style='font:7.0pt "Times New Roman"'>
1537: </span> Submitting a lot of attempts in a short amount of time without
1538: looking up material in between, vs. those giving it one try, reading
1539: up, submitting another one, etc.</p>
1540: <p> 6.<span style='font:7.0pt "Times New Roman"'>
1541: </span> Getting the problem right on the first try, vs. those with high
1542: number of tries.</p>
1543: <p> 7.<span style='font:7.0pt "Times New Roman"'>
1544: </span> Giving up on a problem versus students continuing trying up
1545: to the deadline.</p>
1546: <p> 8.<span style='font:7.0pt "Times New Roman"'>
1547: </span> Participating in the communication mechanisms, vs. those working
1548: alone.</p>
1549: <p><br>
1550: It might be interesting to group students with time of the first log
1551: on (beginning of assignment, middle of the week, last minute) and correlate
1552: this with the number of tries or number of solved problems. A student
1553: who gets all correct answers will not necessarily be in the successful
1554: group if they took an average of 5 tries per problem, but it should
1555: be verified from this research. </p>
1556: <p>We hope to find similar patterns of use in the data gathered from LON-CAPA,
1557: and eventually be able to make predictions as to the most-beneficial
1558: course of studies for each learner based on a limited number of variables
1559: for each individual student. Based on the current state of the learner
1560: in a learning sequence, the system could then make suggestions to the
1561: learner as to how to proceed. </p>
1562: </form>
1563: <br
1564: clear=ALL style='page-break-before:always;'>
1565: <div class=Section2> </div></div>
1566: <br clear=all>
1567: <hr align=left size=1 width="33%">
1568: <div id=ftn1>
1569: <p class=MsoFootnoteText><a href="#_ftnref1"
1570: name="_ftn1" title=""><span class=MsoFootnoteReference> [1] </span></a> If instructor
1571: is going to port the statistics table data to Excel, he/she can select
1572: the checkbox ÒOutput CSV formatÓ at top of the statistics table.</p>
1573: </div>
1574: <div id=ftn2>
1575: <p class=MsoFootnoteText><a href="#_ftnref2"
1576: name="_ftn2" title=""><span class=MsoFootnoteReference> [2] </span></a>
1577: This name has been got from administration office of Michigan State
1578: University for evaluating the examsÕ problem. Here we expanded this
1579: expression to homework problems as well.</p>
1580: </div></span></span></span></span></span>
1581:
1582: </body>
1583: </html>
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