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FREE PUZZLE GIVEAWAY! With one week to go before #DoTheMathBook goes on sale, every @amazon preorder made at amzn.to/2OfG5jK helps us show up in search results for fun math puzzles for kids! So our publisher sent us a few extra copies to share with you... 1/n
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A few of you got some advance copies of #DoTheMathBook, and we love to see the book in action! So please share your photos like @CmonMattTHINK with the #DoTheMathBook hashtag. 2/n @CmonMattTHINK/1393942443083579396