ebb37bb9_D2L_Tickets__Issue
[Created] 30-Aug-2007 10:37 [Number] 78VB46356A [Status] Confirm to Close [Issue] 
We want the 2+2 question type in quizzes to accept and work with negative numbers. Here is the instructor's request, in answering a question from a student as to why D2L will not handle negative numbers: "Ha ha ha! You would think that this would be doable, huh? I submitted a request for this "feature" to be fixed nine months ago and still nothing. The answer is in short, no fix. Here are the rules you have to work under: 1) All answers need to be greater than .001 in practice. D2L won't accept any numbers less that .0001 period. 2) You can't use negative exponents, i.e. 8.85e-12 isn't recognized 3) Students can't enter operators, only numbers. 4) If you need to use the charge of an electron in an equation you would need to put 1.6/1e19 NOT 1.6e-19 You could use a type of question for this problem called "significant figures" rather than "arithmetic". They have to enter an exponent separately, but it would work for this problem. It is a major pain in the ass for most problems though. My suggestion would be to change the question around and give it as multiple choice or matching. For other numeric problems you will have to have students answer in units so the answer comes out greater than .001. Or you can use my Matlab code to turn these problems into multiple choice. I am forwarding this e-mail on to ITLE so there is a record that I am not the only one with these complaints when we have our committee meeting on D2L later. Alan On 8/27/07, jamesd249@cox.net wrote: Dr. Cheville, is there a way to make D2L take negative powers? Like a question is asking students to enter the charge of an electron, and when I have the formula set to 0-1.6*10^-19 it rounds to 0. Any info on how I might fix this would be appreciated. Thanks. "
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