[LON-CAPA-users] Any way around this?

[Raymond Batchelor]

Douglas,
         I have experienced this kind of error message with a variety of problems, which nonetheless work OK.
I think you should just try to answer your existing problem AS A STUDENT.  It probably works OK for in production.
I think the error message is just info for you as author/course coordinator.

The system does not recognize your attempts to set sig figs on the computer's answer but it WILL check for 4 sig figs from the students.
You might have to 'live' with a few little bomb icons and error messages, but it should be transparent for the students.


Cheers,
Ray

----- Original Message -----
From: "Douglas G Mills" <dmills at illinois.edu>
To: "Discussion list for LON-CAPA users" <lon-capa-users at mail.lon-capa.org>
Sent: Tuesday, 21 August, 2012 08:54:52
Subject: Re: [LON-CAPA-users] Any way around this?

Ok, but even so the error message quotes the computer's answer as 8e-06 with
nothing but 1 sig fig, regardless of how hard I try to get it to recognize
that in fact I'm giving it 4 sig figs. What is wanted here is 4 sig figs, so
turning it into a range all the way down to 1 sig fig seems like removing
the sig fig requirement altogether, no?


On 8/21/12 10:50 AM, "Gerd Kortemeyer" <korte at lite.msu.edu> wrote:

> Hi,
> 
> That means the expected answer from the student (and the computer) needs to
> have exactly four significant digits. I would turn that into a range.
> 
> - Gerd.
> 
> On Aug 21, 2012, at 11:48 AM, "Mills, Douglas G" <dmills at illinois.edu> wrote:
> 
>> <responseparam type="tolerance" default="0.5%" name="tol"
>> description="Numerical Tolerance" />
>> <responseparam name="sig" type="int_range" default="4"
>> description="Significant Digits" />
>> 
>> 
>> 
>> On 8/21/12 10:43 AM, "Gerd Kortemeyer" <korte at lite.msu.edu> wrote:
>> 
>>> Hi,
>>> 
>>> On Aug 21, 2012, at 11:39 AM, "Mills, Douglas G" <dmills at illinois.edu>
>>> wrote:
>>> 
>>>> So <numericalresponse answer="$CB1" format="4s"> ??
>>> 
>>> Yes.
>>> 
>>> 
>>>> I have that, and have
>>>> tried setting the variable both with and without the &format command, but
>>>> to
>>>> no avail.  8.000e-6, 8*10^-6 and even .000008000 all show up in the error
>>>> message as 8e-06 complaining of the computer's answer being wrong.
>>> 
>>> What do you have the in "significant digits" and "tolerance" response
>>> parameters?
>>> 
>>> - Gerd.
>>> 
>>> _______________________________________________
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>>> LON-CAPA-users at mail.lon-capa.org
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>> 
>> 
>> Doug
>> 
>> Douglas Mills
>> Director of Instructional Technologies
>> Department of Chemistry
>> University of Illinois
>> dmills at illinois.edu
>> (217) 244-5739 
>> 
>> 
>> _______________________________________________
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>> LON-CAPA-users at mail.lon-capa.org
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> 
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Doug

Douglas Mills
Director of Instructional Technologies
Department of Chemistry
University of Illinois
dmills at illinois.edu
(217) 244-5739 


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