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

**Lars Jensen
**
lon-capa-users@mail.lon-capa.org

*Wed, 9 Oct 2002 09:25:27 -0700 (PDT)*

Hi Guy,
On Wed, 9 Oct 2002, Guy Albertelli II wrote:
>* Hi Lars,
*>*
*>* > Thanks! Are there any other differences between between formularesponse and
*>* > numericalresponse if the former is used for a numerical answer?
*>*
*>* Well it allows a large pile of possibilities in the answer.
*>*
*This is as it should be for any class at college level or above - One
has to hope that these folks can do basic algebra. For this reason the
default for a numerical response should be "expressions allowed" (and
here I mean including perl functions, like sqrt, pi, sin, fraction,
etc.).
>*
*>* Meaning if you ask the question:
*>*
*>* What is 3/5+3/10?
*>*
*>*
*>* The student can just enter 3/5+4/9 and get it right.
*>*
*>* Or enter 45/50
*
Great.
>*
*>* 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).
>* Something like:
*>*
*>* <numericalresponse fraction="reduced" answer="0.166667">
*>*
*>* With values like any, mixed, reduced etc.
*>*
*>* Think this would be better in the problem or as a parameter?
*>*
*
I'm not sure what you mean here, but there probably should be a switch
to turn the "expressions allowed" off - or perhaps thw separate problem
types are needed: An numerical-response-expressions-allowed, and a
numerical-single-number-response?
Lars.
--
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