• A better way to teach math http://opinionator.blogs.nytimes.com/2011/04/18/a-better-way-to-teach-math/ 71 comments 19/4/2011

• A better way to teach math http://opinionator.blogs.nytimes.com/2011/04/18/a-better-way-to-teach-math/ 73 comments 19/4/2011 math

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