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Mathtrain.TV is the product of students taught by Mr. Marcos at Lincoln Middle School in Santa Monica, California. The site features videos in which students explain how to solve mathematics problems commonly attempted by middle school students. Mathtrain.TV also has videos made by teachers. Many of the videos are subtitled.

Brightstorm is a provider of online study materials for mathematics as well as ACT and SAT preparation. The ACT and SAT preparation materials are not free, but the mathematics tutorials are free. The mathematics tutorials are videos featuring mathematics teachers explaining and demonstrating how to solve mathematics problems. There are tutorial videos covering Algebra, Geometry, Trigonometry, and Calculus. The videos can be viewed on the Brightstorm site or you can embed them into your blog or wiki.