[LON-CAPA-users] Interaction between jsMath or LaTeX and randomized multiple choice answers??
Liu, Yuk Tung
ytliu at illinois.edu
Thu Oct 19 16:31:02 EDT 2017
Hi Doug,
I think the issue has to do with forcing the use of the math renderung. It works for me when I omit the math display attribute as Peter suggested, and I set MathJax as the preferred method of math display in my user preferences in the authoring space. For all the courses I manage, I also set the default math display to MathJax and so far no students are having issues with the math display.
Yuk Tung Liu
E-Learning Specialist
Department of Statistics
University of Illinois
________________________________________
From: lon-capa-users-bounces at mail.lon-capa.org [lon-capa-users-bounces at mail.lon-capa.org] on behalf of Mills, Douglas G [dmills at illinois.edu]
Sent: Thursday, October 19, 2017 9:16 AM
To: Discussion list for LON-CAPA users
Cc: Mills, Douglas G
Subject: Re: [LON-CAPA-users] Interaction between jsMath or LaTeX and randomized multiple choice answers??
Hi All,
I've substituted MathJax for jsMath and tested and am actually getting the same results. IF I set the max number of options to show to 6 then all 6 show every randomization. If I leave it as given below though with the max number of options to show set to 4, then for a number of combinations, the LaTeX does not display at all. I keep looking to see if I can discern a pattern and I cannot; however, it does seem to be consistent. The following selections and orders in my testing when they are chosen as 4 out of 6, will not display the LaTeX:
6324
5624
2546
3564
5362
5263
The following orderings, some of which contain similar combinations do display the LaTeX
4621
4612
1465
1264
5261
This is all with the display set to MathJax rather than jsMath.
Is there an error in the LaTeX code? Is there some nasty interaction between LaTeX and the choosing and ordering of a random number of prompts for an optionresponse?
Doug
Douglas Mills
Director of Instructional Technology
Department of Chemistry
University of Illinois
On 10/19/17, 8:57 AM, "Mills, Douglas G" <dmills at illinois.edu> wrote:
Thanks Peter. Yes, these are older problems and to be honest, I wasn't remembering which system, jsMath or MathJax was the newer option. I had seen the note about fonts but since the problems appear at least half the time had figured it couldn't be missing fonts. I will explore these additional options. Thank you for your help!
Doug
Douglas Mills
Director of Instructional Technology
Department of Chemistry
University of Illinois
On 10/18/17, 8:41 PM, "lon-capa-users-bounces at mail.lon-capa.org on behalf of Peter Dencker" <lon-capa-users-bounces at mail.lon-capa.org on behalf of dencker at math.uni-luebeck.de> wrote:
As noted in the manual, setting the attribute display to jsmath is
generally discouraged as it requires users to have installed jsmath
fonts on their computer.
(https://loncapa.msu.edu/adm/help/Authoring_Output_Tags.hlp)
The last release of jsMath was more than 4 years ago. It was succeeded
by MathJax. Forcing the use of this math rendering engine with <m
display="MathJax"> seems to work in your example.
The math rendering can be selected by the user or the course
coordinator. Using your example without the display attribute in <m> ..
</m> and forcing the jsMath math rendering as course coordinator seems
to work. But using your example with display attribute "MathJax" and
forcing the jsMath math rendering as course coordinator does not. I
would like to recommend to omit the display attribute in <m> .. </m>.
- Peter
Am 18.10.2017 um 20:00 schrieb Mills, Douglas G:
> HI All,
>
> Below is code for a problem that is acting quite strangely. If you put this into your authoring space and hit new randomization a few times, you'll see that in some instances the LaTeX doesn't display at all for any of the answers. I added the "1:" etc. at the front of each one to try to get a handle on what was happening. I'm seeing that in some combinations of four, such as 6532, 3265, 6432, 4365 and 3625 (and some others), the LaTeX does not show. Noticing that several of the combinations involved 2,3,5 and 6, I removed options 1 and 4 and left the rest of the code as is. Under those conditions, even the combinations that do not appear when there are 6 options to choose from (6532 for example) DOES appear when there are only 4 options to be chosen from. This leads me to suspect that there is some type of interaction going on between the LaTeX and the choosing of 4 out of 6 options in the problem below.
>
> Maybe I'm missing something obvious? All help appreciated!
>
> Doug
>
> <problem>
> Which of the following are variations of the ideal gas law?
> <optionresponse id="14" randomize="yes" max="4">
> <foilgroup checkboxoptions="nochoice" options="('True','False')" checkboxvalue="True">
>
> <foil value="True" name="Foil1">
> <startouttext />1: <m display="jsMath">$V = \frac{nRT}{P}$</m><br/><endouttext />
> </foil>
> <foil name="Foil2" value="True">
> <startouttext />2: <m display="jsMath">$P = \frac{nRT}{V}$</m><br/><endouttext />
> </foil>
> <foil value="True" name="Foil3">
> <startouttext />3: <m display="jsMath">$n = \frac{PV}{RT}$</m><br/><endouttext />
> </foil>
> <foil value="True" name="Foil4">
> <startouttext />4: <m display="jsMath">$T = \frac{PV}{nR}$</m><br/><endouttext />
> </foil>
> <foil value="True" name="Foil5">
> <startouttext />5: <m display="jsMath">$R = \frac{PV}{nT}$</m><br/><endouttext />
> </foil>
> <foil name="Foil6" value="True">
> <startouttext />6: <m display="jsMath">$PV = nRT$</m><br/><endouttext />
> </foil>
>
> </foilgroup>
> </optionresponse>
>
> </problem>
>
>
>
>
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--
Dr. Peter Dencker
wissenschaftl. Mitarbeiter
UNIVERSITÄT ZU LÜBECK
INSTITUT FÜR MATHEMATIK
Ratzeburger Allee 160
23562 Lübeck
dencker at math.uni-luebeck.de
www.math.uni-luebeck.de
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