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Wacks Formula – Math Shortcuts
Solve Math Without Solving
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Tag: Training
May 6, 2014
Math Teachers Got It Wrong the First Time
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April 21, 2014
Mystery of the Singing Numbers
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April 20, 2014
Using Math to Fix the Toilet
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October 23, 2013
March 16, 2014
CPD 2013.10.23
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