Here's an article a colleague sent me. He asked me if Moodle could be used for Fantasy Football. Hmm... It got me thinking about math-specific activities.
I read somewhere that the largest group of teachers using Moodle in K-12 education are math and science teachers. Yet there are no math- or science-specific activities. For science, there is the 3rd-party molecule editor, and for math, there are Algebra and TeX filters, but no activities (at least none are listed in the moodle.org Modules and Plugins database).