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

Lars Jensen lon-capa-users@mail.lon-capa.org
Wed, 9 Oct 2002 10:42:40 -0700 (PDT)

Hi Ray,

The default doesn't mean that an expression *must* be entered, a single
number certainly would be accepted - it only means that a whoile range
of expressions also would be allowed. For example if the answer to a
college level chemistry problem is equivalent to the length of a 15 
degree arc of a circle of radius 3^(1/2) m, the following answers should be 
both accepted:

2*pi*sqrt(3)*15/360 m
0.45345 m

Don't you agree?


On Wed, 9 Oct 2002, Ray Batchelor wrote:

> Hi Lars,
> > 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.).
> > 
> Well, one can hope.
> I wouldn't go quite as far as making this the default, though.
> On the other hand, in this day and age, maybe actual numbers should be 
> disallowed.... 
>    :)
> I forsee the day when the spreadsheet becomes the entire interface.
> Aaaaaaaahhhhh!
> Cheers,
> Ray

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