Ron Persky
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Friday the Thirteenth
Klaus Puhlmann
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Unsolvable Problems: Quadrature of the Circle
Klaus Puhlmann
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Delta-K Volume 37 Issue 2
Full Issue | Delta-K
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From the President’s Pen
Cynthia Ballheim
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The Right Angle
Daryl M. J. Chichak
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MCATA 1999 Annual Conference
Klaus Puhlmann
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Men as Trees Walking
Ed Barbeau
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NCTM Standards in Action
Klaus Puhlmann
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How Do Students Think About Statistical Sampling Before Instruction?
Victoria R. Jacobs