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If You Were a Minus Sign (Math Fun) (edition 2008)
by Speed Shaskan, Trisha, Carabelli (Illustrator), Francesca (Illustrator)
If You Were a Minus Sign (Math Fun) by Trisha Speed Shaskan
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Amazon.com Product Description (ISBN 140484788X, Paperback)If you were a minus sign, you would subtract one number from another. You could subtract food and balloons. In every problem, you would find the difference. What else could you do if you were a minus sign?
(retrieved from Amazon Thu, 12 Mar 2015 18:20:51 -0400)
Primary math concepts are introduced using creative examples, easy-to-understand text and art illustration.
(summary from another edition)
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