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Learn right. Not rote. These excellent explanations of math concepts have helped a lot of people get right with the subject.
A play and math infused website overflowing with great ideas, quote, games, and resources for the younger set.
A treasure trove of unique, highly relevant, beautifully designed math lessons and ideas.
Randall Munroe of xkcd.com answers your questions with math and physics. Incredibly entertaining, endlessly mind-expanding.
Materials and videos from one of the best math teachers around. Especially recommended for middle & high school teachers looking for inspiration.
The best video explanations of math concepts I've ever seen. Perfect for teaching yourself calculus or exploring beautiful ideas in math.
The Global Math Project tries to share a beautiful math idea every October 10. Get in and explode some dots!
The Julia Robinson Math Festival website gives you great problems, and resources if you want to throw your own festival!
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The textbook of the future, featuring interactive text and some of the best interactive environments online