[LON-CAPA-users] mulitple correct answers in a numerical
Guy Albertelli II
lon-capa-users@mail.lon-capa.org
Mon, 14 Nov 2005 16:16:38 -0500 (EST)
Hi Donnell,
> I asked a week ago and haven't received a response yet
>
> Sorry to ask again, but this has come up in our authoring questions
Well the answer is for 2.0, not really (there is an incredibly ugly
way with <stringresponse> with type Re and eval style regexp, but It'd
be really fragile and hard to write, debug or understand.)
It is an outstanding bug:
http://bugs.loncapa.org/show_bug.cgi?id=33
And the design of what it'll look like is done, it just hasn't gotten
implemented yet though.
(For 2.1 we will have a <customresponse> that will allow instructors
to write scripts to parse and grade a users response.
A (simple a not very good) Example:
<problem>
<customresponse answerdisplay="something near 90 or -90">
<answer type="loncapa/perl">
if (abs(90 - abs($submission)) < 0.001) {
return 'EXACT_ANS';
}
return 'INCORRECT';
</answer>
<textline readonly="yes"></textline>
</customresponse>
</problem>
>
> Let's say in a numerical response I would like to accept both answers of
> -90 and 90 degrees.
>
> How do I do this?
>
> I looked in the FAQ and they have how to accept this type of answer in a
> string response type question, but I tried something similar for
> numerical response and it does not work.
>
> Thanks
>
> Donnell
>
>
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--
guy@albertelli.com 0-7-2-0-27,137