HK,
To assign partial credit in a customresponse item, return 'ASSIGNED_SCORE',
$score where $score is a number between 0 and 1, from within the <answer
type="loncapa/perl"></answer> block when the student's submission satisfies
your criteria for earning partial credit, but not full credit.
e.g.,
<customresponse answerdisplay="$answer" id="11">
<answer type="loncapa/perl">
if (abs($submission-$answer) < 0.00001) {
return 'APPROX_ANS';
} elsif (abs($submission-$answer) < 0.1) {
return ('ASSIGNED_SCORE',0.5);
}
return 'INCORRECT';
</answer>
There are three awards applied when the questiontype parameter in effect is a
survey or anonymous survey, which are not listed in the "Full list of possible
return codes" included in section 7.12 "Custom Response Problems" in the
Authoring Manual: SUBMITTED_CREDIT, ANONYMOUS, and ANONYMOUS_CREDIT.
LON-CAPA will automatically replace the award set by the customresponse item if
it was one of INCORRECT, APPROX_ANS or EXACT_ANS, and in the case of the two
*_CREDIT awards will award a score of 1.0, regardless of whether the student's
submission was 'correct' or not.
The intent of SUBMITTED_CREDIT and ANONYMOUS_CREDIT is to assign credit to
students for making a submission to a survey item (which could be any type of
response item). The questiontype parameter is used to assign a problem as
survey, anonymous survey (with or without credit).
I have just committed a minor change to LON-CAPA so that for questiontype of
survey with a customresponse which returns ASSIGNED_SCORE, the behavior will be
the same as for INCORRECT, APPROX_ANS or EXACT_ANS. See:
mail.lon-capa.org/pipermail/lon-capa-cvs/Week-of-Mon-20210111/029319.html
Stuart Raeburn
LON-CAPA Academic Consortium
________________________________________
From: LON-CAPA-users <lon-capa-users-boun...@mail.lon-capa.org> on behalf of
H.K. Ng via LON-CAPA-users <lon-capa-users@mail.lon-capa.org>
Sent: Saturday, January 9, 2021 1:57 PM
To: Discussion list for LON-CAPA users
Subject: [LON-CAPA-users] Partial credit in custom response
Hi,
Is there a way to assign partial credit in customresponse? There are two
parameters, 'SUBMITTED_CREDIT' and 'ASSIGNED_SCORE that would indicate that
this is possible. If so, how are they used? Thanks.
Regards,
-hk
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