[LON-CAPA-users] problem status without showing solution

Lars Jensen lon-capa-users@mail.lon-capa.org
Sat, 04 Apr 2009 10:23:21 -0700

Hi Justin,

There are several reasons why this is not an ideal solution:

(i) When creating the exam, I use the "with CODE" option. This means 
that I create only a couple of versions of the exam, so many students 
have the same version of the problems.

(ii) Exams are multiple choice ("Exam" problem type). During the exam, 
students can make a note of the 5 choices given to each problem and then 
go enter them from home.

For these reasons it is probably better to create a copy of the exam 
folder, with all new seeds for the problems, and leave the old folder 
visible so they can see which problems they got wrong. The problem is 
that the latter is not straight forward. The only way I have come up 
with is to make sure that each student has exhausted their maxtries, and 
the due date is in the future (and problem status is yes). This requires 
setting maxtries=1 and manually changing the number of tries from 0 to 1 
on all unanswered problems. (Ability to set maxtries=0 would have been 
helpful here.)


Justin Gray wrote:
> The current options for the show problem status parameter are:
> Yes
> Yes, and show correct answer if they exceed the maximum number of tries.
> No, don't show correct/incorrect feedback.
> No, show no feedback at all.
> I believe that, before the answer open date, the first option shows the 
> correct answer only for questions that a student answers correctly. You 
> might try the following.
> Set the show problem status parameter to yes. After the students have 
> written the test, take a snapshot of their scores. Increase the number 
> of tries to allow students to do their corrections, and make sure that 
> the answer open date is set for after all corrections have been 
> completed. Use the snapshot score and the revised score to compute the 
> total score.
> Justin
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> Justin Gray                                                  
> Dept. of Mathematics                                  
> Simon Fraser University
> 8888 University Drive
> Burnaby, B.C. V5A 1S6
> Canada
> Tel. +1 778-782-4237
> Fax. +1 778-782-4947
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> On Thu, Apr 2, 2009 at 10:31 PM, Lars Jensen <ljensen@tmcc.edu 
> <mailto:ljensen@tmcc.edu>> wrote:
>     Hi again,
>     I should probably explain this better:
>     My students are taking a proctored  exam on lon-capa. After they
>     have received the exam results, I want to give them a second chance,
>     at a reduced credit, to complete the exam problems they got wrong.
>     For the second go, they are allowed to work from home. So for
>     obvious reasons, after the first round, I don't want lon-capa to
>     tell them the answer to the problems they got wrong, but I do want
>     lon-capa to tell them which problems were right.
>     Is there any way to do something like this? Obviously there is some
>     manual work associated with the reduced credit, but I'm willing to
>     do that. For now, I'm stuck on showing students which problems they
>     had wrong without revealing the answer to them.
>     Lars.
>     Lars Jensen wrote:
>         Hi,
>         If there any way, after the due date, to make lon-capa display
>         the problem status of a the problems in a set without showing
>         the correct answer to the problems that were answered wrong?
>         Lars.
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