I would recommend using the LON-CAPA spreadsheet to implement this
grading scheme for display of grades within LON-CAPA.
As regards export to Blackboard Learn, it would be straightforward to
modify the existing grade export script used in your domain (for which
I implemented some speed-ups at the end of last year) to support
points calculations that incorporate number of tries used, given that
the number of tries used by each student on each problem part are
already available in the md5_<courseid>_performance table for each
Contact me off-list if you'd like to pursue that option.
One of the outcomes of my previous work on grade export for purdue is
that the next LON-CAPA release includes a new domain configuration
(and associated changes in LON-CAPA internals):
"Default lifetime (since last update) can be set for 'temporary' MySQL tables
containing student performance data (course's homeserver only) by course type,
(can be overridden in a specific course via DC's 'View or modify a course')."
LON-CAPA Academic Consortium
Quoting "Huckleberry, David W" <dhuck...@purdue.edu>:
I have a faculty member that wants to give more points for first
attempt, and reduce after that. We contacted Gerd and he gave us
information on doing it in the Spreadsheet, but the issue is our
grade sync to Blackboard Learn would ignore any of those
calculations and only take the Awarded Points.
Is anyone doing anything where that can be handled within the problem itself?
See the faculty question below:
"After emailing Bob Herrick, and having Bob get Gerd's feedback, it
sounds like deducting points based on attempts would need to be done
after an exam has been submitted. I'm guessing there would need to
be a spreadsheet with each students attempts and score for each
problem that would need to be run through a formula to adjust their
score (1 attempt and correct = 1 point, 2 attempts and correct = 0.5
points, more than 2 attempts or incorrect = 0 points). I would
prefer to have a way to assign conditional points automatically, but
I don't know if this is something that would need to be coded into
each problem or something that we would need to code into LON-CAPA
somewhere else, or if there would be a way to do this with
BlackBoard when the scores get transferred."
David W Huckleberry
Information Technology at Purdue (ITaP) | Innovations in Teaching
523 Young Hall / 155 S. Grant St
West Lafayette, IN 47907
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