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CATEGORY

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Area of mathematics Number sense Arithmetic Addition Multiplication Square numbers Cubic numbers Factorial Bases Modular arithmetic Fractions Percentages Patterns/sequences Geometry and Space Topology Algebra Logarithms Pythagorean theorem Rates Probability Statistics

Type of thinking Reasoning Process Trick Clever Pitfall Backwards Puzzle Magic

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SOURCE

Books Sloane, Paul Sloane, Paul and Des MacHale Sloane, Paul and Des MacHale Longley-Cook, L. H. Berrondom, Marie Gardner, Martin Fixx, James F

Other Interactive Mathematics Program Mathematics Teacher Minnesota Math League New York Math League Lori Thomson