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Math Tizzy is a free online math learning program designed for schools and home users. It is a PHP and MySql program as I put it up now with little Javascript.
IMathAS is a web-based math assessment and homework system. It is a course/learning management system (CMS/LMS/VLE) and testing system featuring algorithmic questions, similar to WebWork, Webassign, and publisher systems like iLrn, MathXL, etc.
WebMathUI-013 is a UI layer that displays math test and interact
with users. The project is ONLY intended to be a UI layer and will try to use other sourceforge projects for user management, test management etc - which should be a seperate project.