[LON-CAPA-users] Unreduced answers in Numerical Response

[Lars Jensen]

Hi Guy,

On Wed, 9 Oct 2002, Guy Albertelli II wrote:

> 
> formularesponse supports all of these, and if you want pi or some
> other constant you can use the smaples field to do this
> 
> <forumalresponse answer="pi*sqrt(2)" samples="pi@$pi">
> 

This sounds to tedious. pi should be pre-defined.

> > Great.
> 
> I think most instructors would disagree. Most of them like the
> students to have to do the computations.
> 
This may be the case for most science instructors, but lon-capa would be
more attractive to math instructors if expressions are allowed. 

> > > Seems like there is enough reasons that one could do a fraction
> > > control option in numericalresponse
> > > 
> > 
> > Yes! But "all" expressions should be allowed (see above).
> 
> I think fractions might be a useful subset I could see an instructor
> wanting to accept fractional answers but not allow the student to be
> doing all kinds of other things.

Perhaps we need two levels of expressions allowed?

> 
> 
> > I'm not sure what you mean here, but there probably should be a switch
> > to turn the "expressions allowed" off
> 
> Correct, and should this switching occur in a place only the author
> can change (i.e. when editing the problem)
> Or should it be something a course coordinator chooses (and thus a
> parameter to show on the parm screen)
> 

The latter. Math instructors should be able to set "expressions allowed"
as the default for the course. 

Lars.

> -- 
> guy@albertelli.com          BM: n^20 t20 z20 qS 
> Guy Albertelli -7-7-9-  O-
>     Today I will treat myself as I would my best friend--with sarcasm
>     and neglect.   
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--
Lars Jensen, TMCC/Vista B200, 7000 Dandini Blvd, Reno NV 89512-3999. 
Internet: <jensen@physics.unr.edu>, http://www.scsr.nevada.edu/~jensen
Tel: 775.673.7113  FAX: 775.674.7592