| | Secrets of Mental Math: The Mathemagician's Guide to Lightning Calculation and Amazing Math Tricks
Authors: Arthur Benjamin, Michael Shermer
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ASIN: 0307338401
Publication Date: August 8, 2006
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|  | | Teach Your Child Math: Making Math Fun for the Both of You
Authors: Arthur Benjamin, Michael Shermer
List Price: $10.95
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ASIN: 0929923324
Publication Date: December 1991
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