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There are several improvements over what we had before: 1. We track all the questions seen in the the student's previous quiz attempts, so that when they start a new quiz attempt, they get questions they have not seen before if possible. 2. When there are no more unseen questions, we start repeating, but always taking from the questions with the fewest attempts so far. 3. A similar logic is applied with variants within one question. There is lots of credit to go around here. Oleg Sychev's students Alex Shkarupa, Sergei Bastrykin and Darya Beda all worked on this over several years, helping to clarify the problem and shape the best solution. In the end, their various attempts were rewritten into this final patch by me.
ACTIVITY MODULES
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These are main modules in Moodle, allowing various activities.
Each of these modules contains a number of expected components:
mod_form.php: a form to setup/update a module instance
version.php: defines some meta-info and provides upgrading code
pix/icon.gif: a 16x16 icon for the module
db/install.xml: an SQL dump of all the required db tables and data
index.php: a page to list all instances in a course
view.php: a page to view a particular instance
lib.php: any/all functions defined by the module should be in here.
constants should be defined using MODULENAME_xxxxxx
functions should be defined using modulename_xxxxxx
There are a number of standard functions:
modulename_add_instance()
modulename_update_instance()
modulename_delete_instance()
modulename_user_complete()
modulename_user_outline()
modulename_cron()
modulename_print_recent_activity()
If you are a developer and interested in developing new Modules see:
Moodle Documentation: http://moodle.org/doc
Moodle Community: http://moodle.org/community