When I was a middle school and high school student, mathematics was the one subject for which I had to have visual demonstrations in order to comprehend its concepts. Unfortunately for me, when I was in high school I couldn’t just jump on the Internet to find mathematics tutorial videos as today’s students can. The following are five places that students can find free mathematics tutorial videos.
http://www.freetech4teachers.com/2010/02/five-good-places-to-find-math-tutorial.html