I'm now up to three out of four students with this problem were using laptops with trackpads. Haven't heard back from the fourth. Definitely seems to be a factor in what is happening here. I know the most recent was drop down questions (option response - matching) type questions and I believe that slight movement of a finger on a trackpad can change the answer of a recent drop down selection... I'm not sure how that results in a double submission though.
Doug Douglas Mills Director of Instructional Technologies Department of Chemistry University of Illinois dmi...@illinois.edu (217) 244-5739 On 9/15/14, 11:22 AM, "Mills, Douglas G" <dmi...@illinois.edu> wrote: >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
