[LON-CAPA-users] online lab grading: read student data

Thu, 13 Jul 2006 22:35:05 -0700

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Hi James -- We tried some questions the past year
where the students would enter data to do their own error analysis.&nbsp;
They are open xml -- I could send you code as well. 
Links are 
<tt>/<a href="http://loncapa.chm.nau.edu/res/">res</a>/<a
 href="http://loncapa.chm.nau.edu/res/nau/">nau</a>/<a
 href="http://loncapa.chm.nau.edu/res/nau/jim/">jim</a>/<a
 href="http://loncapa.chm.nau.edu/res/nau/jim/chm152L/">chm152L</a>/<a
 href="http://loncapa.chm.nau.edu/res/nau/jim/chm152L/ExpB/">ExpB</a>/<a
 href="http://loncapa.chm.nau.edu/res/nau/jim/chm152L/ExpB/error.problem">error.problem</a></tt> 
 
<tt>/<a href="http://loncapa.chm.nau.edu/res/">res</a>/<a
 href="http://loncapa.chm.nau.edu/res/nau/">nau</a>/<a
 href="http://loncapa.chm.nau.edu/res/nau/jim/">jim</a>/<a
 href="http://loncapa.chm.nau.edu/res/nau/jim/chm152L/">chm152L</a>/<a
 href="http://loncapa.chm.nau.edu/res/nau/jim/chm152L/ExpB/">ExpB</a>/<a
 href="http://loncapa.chm.nau.edu/res/nau/jim/chm152L/ExpB/error-DH.problem">error-DH.problem</a></tt> 
 
Here are some experiences to consider: 
(1)&nbsp; We made it two parts as Guy suggests.&nbsp; Part 1 is just data entry.
Part 2 is comparing the range and percent error of the measurements. 
(2)&nbsp; Be sure to remind the students of the numbers from part 1 in part
2.&nbsp; Many will forget what they put in and will not be able to complete
the problem. 
(3)&nbsp; We had the problem adjustable for either 2 or 3 measurements using
block conditions. 
(4)&nbsp; Our biggest problem was when the students mistakenly entered the
wrong numbers -- out of 250 students in a semester, we had about 15
cases.&nbsp; They get really upset, even when I told them to just calculate
based on the numbers that they put in. So, I had to reset the problem
for about 10 students each semester. 
(5) We had to play around with sig figs and tolerance because the error
could be anywhere from 0% to big -- I've seen quite a range. 
 
We also have some problems that accept student data input on simulated
systems and then make the students work with those numbers. That has
worked better.&nbsp; The students don't get as possessive about fake data as
they did about their own data. 
 
What we have had better luck with separate calculation checks like 
<a href="http://jan.ucc.nau.edu/%7Ejmaxka/chm152L/expB/expB.html">http://jan.ucc.nau.edu/~jmaxka/chm152L/expB/expB.html</a> 
Actually we were working on a hybrid model of javascript inside
loncapa to confirm that the values are actually what the student wants. 
If I weren't leaving NAU, I planned to insert these into loncapa and
use the submit to verify the results, but ....... 
 
Hope this helps -- Jim 
 
James Sullivan wrote:
<blockquote cite="mid000a01c6a6a1$2628c770$d0b7ac80@HAS03047"
 type="cite">
 <pre wrap="">Ahoy Guy,

The source doesn't seem to be open for the first one.

Also, Ed sent me PM about the static friction problem so I am looking it
over. Am I getting the correct impression that basically the only way to do
this to make a dummy numerical response entry?

Thanks,
Jay

James M. Sullivan, Assistant Professor
<a class="moz-txt-link-abbreviated" href="mailto:jmsullivan@vcu.edu">jmsullivan@vcu.edu</a>
Department of Physics Virginia
Commonwealth University
tel: 804/828-6343
fax: 804/828-7073

1020 W. Main St.
PO BOX 842000
Richmond, VA 23284-2000

*
"If you can drive a nail, and if you have any nails to drive, drive them." 
          - H. D. Thoureau, 1850
* 

  </pre>
  <blockquote type="cite">
    <pre wrap="">-----Original Message-----
From: <a class="moz-txt-link-abbreviated" href="mailto:lon-capa-users-admin@mail.lon-capa.org">lon-capa-users-admin@mail.lon-capa.org</a> [<a class="moz-txt-link-freetext" href="mailto:lon-capa-users">mailto:lon-capa-users</a>-
<a class="moz-txt-link-abbreviated" href="mailto:admin@mail.lon-capa.org">admin@mail.lon-capa.org</a>] On Behalf Of Guy Albertelli II
Sent: Thursday, July 13, 2006 1:13 PM
To: <a class="moz-txt-link-abbreviated" href="mailto:lon-capa-users@mail.lon-capa.org">lon-capa-users@mail.lon-capa.org</a>
Subject: Re: [LON-CAPA-users] online lab grading: read student data

Hi James,

A very simple problem that does a very simple version of what you are
asking:
<a class="moz-txt-link-freetext" href="http://s10.lite.msu.edu/res/msu/albertel/submission_example.problem">http://s10.lite.msu.edu/res/msu/albertel/submission_example.problem</a>

Here is a more fully realized example:
<a class="moz-txt-link-freetext" href="http://s10.lite.msu.edu/res/msu/kashy/physicsLib02/10_Motion_W_Friction/St">http://s10.lite.msu.edu/res/msu/kashy/physicsLib02/10_Motion_W_Friction/St</a>
atCoeffLabB.problem

Both are source available.

There is a chemistry one that source isn't curently available on:
<a class="moz-txt-link-freetext" href="http://s10.lite.msu.edu/res/msu/ciskepau/CHEMISTRY/chemlab.problem">http://s10.lite.msu.edu/res/msu/ciskepau/CHEMISTRY/chemlab.problem</a>

Here is a bug report detailing some deficiencies with the current
approach and outlining a new tag to attempt to solve these.
<a class="moz-txt-link-freetext" href="http://bugs.loncapa.org/show_bug.cgi?id=4229">http://bugs.loncapa.org/show_bug.cgi?id=4229</a>

--
<a class="moz-txt-link-abbreviated" href="mailto:guy@albertelli.com">guy@albertelli.com</a>   0-7-1-7-27,137
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  <pre wrap=""><!---->

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