[LON-CAPA-users] Hints for first LON-CAPA question

[Gerd Kortemeyer]

Hi,

On Jun 14, 2013, at 3:07 PM, Joseph Mingrone <jrm at mathstat.dal.ca> wrote:

> 
> Thank you all for your helpful suggestions.  I'm starting to
> get a better sense how everything fits together.
> 
> I have a (hopefully simple) followup question.  For a Radio Response
> problem with randomization, is there a simple way to group the randomly
> chosen questions?  Say there are 5 possible answers
> 
> 1, (2a, 2b), (3a, 3b), (4a, 4b), (5a, 5b).
> 
> Is it possible to randomly select only one version of an incorrect
> answer?  So possible options shown to the student might be 2a, 1., 3b or
> 5b, 4a, 1, but not 2a, 2b, 1.
> 
> I guessed putting the answer versions in a foil group together might
> give the functionality, but it didn't seem to work.

Not foilgroup but conceptgroup.

<foilgroup>
<foil name="1">…</foil>
<conceptgroup concept="2">
<foil name="2a">…</foil>
<foil name="2b">…</foil>
</conceptgroup>
…
</foilgroup>

The colorful editor helps in establishing such structures.

- Gerd.