The two students who got back to me on my follow-up question about this both report having been using a touchpad on their laptop when the problem began.
Doug Douglas Mills Director of Instructional Technologies Department of Chemistry University of Illinois dmi...@illinois.edu (217) 244-5739 On 9/12/14, 1:43 PM, "Rex Abert" <abe...@tcc.fl.edu> wrote: >I have been experiencing similar situations, and I'd like to throw in my >2 cents. For me, I was getting internal errors (bombs) when a student >submitted a correct response. I would see a submission that is graded >correct, followed by another submission causing the error. What I >noticed from Doug's and mine is the identical time stamp on the offending >transactions. > >I have place screenshots at > >http://www.math.fsu.edu/~rabert/LC/LCscreenshot01.png >http://www.math.fsu.edu/~rabert/LC/LCscreenshot02.png > >I asked the student if she was using a mobile device, and she replied >that is was a laptop, but that she was using the touchpad instead of the >mouse. >My suspicion is that touch devices are not being handled adequately. > >When a mouse is used, the events fired are mousedown, mouseup, and >mouseclick. > >With a touch device, the events touchstart, touchmove, and touchend are >fired in addition to the mouse events. I'd wager that the "touchmove" is >what is causing a different option for Doug's student to be selected in >addition to the correct selection. > >I hope that this speculation might turn out to be useful. > >Rex Abert >Assistant Professor of Mathematics >Tallahassee Community College >________________________________________ >From: lon-capa-users-boun...@mail.lon-capa.org >[lon-capa-users-boun...@mail.lon-capa.org] on behalf of Stuart Raeburn >[raeb...@msu.edu] >Sent: Thursday, September 11, 2014 9:50 PM >To: lon-capa-users@mail.lon-capa.org >Subject: Re: [LON-CAPA-users] another instance of correct answer >apparently being unaccepted... > >Doug, > >I have added you to bug 6740, which was filed for a similar situation >in a different domain. Note: that bug is only visible to >bugs.loncapa.org users explicitly included as a CC, reporter or a >developer since it includes some student information. > >You may want to copy the screenshots you uploaded to >https://uofi.box.com/ and linked to in your two posts to the >lon-capa-users mailing lists to that bug report as attachments. > > >Stuart Raeburn >LON-CAPA Academic Consortium > >Quoting "Mills, Douglas G" <dmi...@illinois.edu>: > >> Hi All, >> >> I've amassed as much data as I know how to amass on this situation >> which has occurred now with a different student. Here's what I have: >> >> Looking at his "scores per problem" view via the Course Progress >> interface, it appears that he has credit for all 15 questions: >> https://uofi.box.com/s/cn7vrpqyenp1zr7owke9 >> >> Clicking on the links to view his actual submissions, however, >> indicates that question 15 is currently wrong. Here's a screenshot >> of that with the previous tries dialogue up where you can see that >> his second attempt was graded as CORRECT: >> https://uofi.box.com/s/a17kkg1mfk2029k9kgpz >> >> Here I scroll down the page and look at his submissions for this >> part. I see an incorrect submission, what appears to be a >> non-submission -- the date and time are there but no other details, >> the submission judged as "exact_ans" and then one evaluated ad >> "incorrect." Note also that these two latter submissions are both >> listed as Trial: 2. Then there are several more "non-submissions" -- >> dates are there, but no other information. Not in the screen shot >> there are a couple other parts submitted next, then several more of >> these non-submissions: >> https://uofi.box.com/s/hdttef80s3d8sn1ueqfr >> >> And finally here is where I click as if to manually assign grades to >> this student. Part 41 is the part in question. You see here that >> it shows part 41 as currently being awarded 1 point (if I >> understand that correctly) but NOT having the red checkmark next to >> it under weight. Thinking perhaps I can override, I went ahead and >> saved this as if I had awarded 1 point but that did not change >> anything when I came back to the student. >> https://uofi.box.com/s/0ogcwvdze360djbk89np >> >> This is especially irksome because it has occurred on our prelab0 >> and Safety quiz which is has to be completed before anything else in >> the course can be accessed. The student is stuck, I think as >> represented by all the "non-submissions" now showing . I 'll next >> try resetting the problem and hopefully he can then successfully >> complete it, but I wanted to document what we're seeing here first. >> Any thoughts? Is there somewhere I should be pulling a more >> thorough report of what has transpired from? >> >> Doug >> >> Douglas Mills >> Director of Instructional Technologies >> Department of Chemistry >> University of Illinois >> dmi...@illinois.edu<mailto:dmi...@illinois.edu> >> (217) 244-5739 > >_______________________________________________ >LON-CAPA-users mailing list >LON-CAPA-users@mail.lon-capa.org >http://mail.lon-capa.org/mailman/listinfo/lon-capa-users >_______________________________________________ >LON-CAPA-users mailing list >LON-CAPA-users@mail.lon-capa.org >http://mail.lon-capa.org/mailman/listinfo/lon-capa-users _______________________________________________ LON-CAPA-users mailing list LON-CAPA-users@mail.lon-capa.org http://mail.lon-capa.org/mailman/listinfo/lon-capa-users
