[LON-CAPA-users] Unreduced answers in Numerical Response
Guy Albertelli II
Wed, 9 Oct 2002 15:05:41 -0400 (EDT)
> > > 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,
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">
> > 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.
Sorry meant 3/5+3/10
> > Or enter 45/50
I think most instructors would disagree. Most of them like the
students to have to do the computations.
> > 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.
> 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)
firstname.lastname@example.org 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