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MindWare's Subtraction Secrets book is full of mathematical puzzles designed to improve subtraction skills! Scuba dive for sunken treasures and snap photos of rare butterflies while practicing subtraction! The puzzles also introduce kids to using a compass!
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Brand: MindWareAuthor: Evelyn B. ChristensenSize: 280 x 215 x 3mmAge: Grade 1-4 (age 6 years +)
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