Challenge Math For the Elementary and Middle School Student
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Primary Grade Challenge Math
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Real World Algebra
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Becoming a Problem Solving Genius
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The Ten Things All Future Mathematicians and Scientists Must Know (But are Rarely Taught)
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Upper Elementary Challenge Math
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25 Real Life Math Investigations That Will Astound Teachers and Students
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Scammed by Statistics
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Now You Know -- 700 Challenging Questions for the Curious Mind
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Now you Know - 700 Challenging Questions for the Curious Mind Volume 2
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Police Reform: Moving From Slogans to Solutions
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