Showing 13–21 of 21 results

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  The W-method of Multiplication

  Suggested Price: $ 1.00 Set Price
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  When the Numbers March Two by Two

  Suggested Price: $ 1.00 Set Price
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  Square Cuts

  Suggested Price: $ 2.00 Set Price
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  Conquer the Divide: Division shortcuts

  Suggested Price: $ 1.50 Set Price
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  Math Party Tricks to Confound and Astound

  Suggested Price: $ 5.00 Set Price
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  Fibonacci Fun

  Suggested Price: $ 1.00 Set Price
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  Doubled Trouble

  Suggested Price: $ 1.00 Set Price
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  Magic Squares

  Suggested Price: $ 2.00 Set Price
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  The Calendar Trick

  Suggested Price: $ 1.00 Set Price