Seriously: you're looking at the future of math textbooks here, if math textbooks have a future. http://t.co/jsqiiFc1Mc
— Dan Meyer (@ddmeyer) May 28, 2015
via Twitter https://twitter.com/ddmeyer
May 28, 2015 at 07:20AM
Seriously: you're looking at the future of math textbooks here, if math textbooks have a future. http://t.co/jsqiiFc1Mc
— Dan Meyer (@ddmeyer) May 28, 2015
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