Moodle is a course management system (CMS) - a free, Open Source software package designed using sound pedagogical principles, to help educators create effective online learning communities. You can download and use it on any computer you have handy (including webhosts), yet it can scale from a single-teacher site to a 40,000-student University.
Whether or not you agree with the principles of students creating their own questions as evidence of learning it is a great way for teachers to harvest questions for reuse in the classroom. Lancaster would have approved.
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