Bonnie H. Litwiller and David R. Duncan
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Lessons Learned from Looking Inside the Classroom
Nancy Drickey
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Geometry in Landscaping What’s the Diameter?
Klaus Puhlmann
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Gauss and the Regular Heptadecagon
William Dunham
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Mathematics Council Newsletter
Anne MacQuarrie
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Delta-K Volume 40 Issue 2
Full Issue | Delta-K
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From the President’s Pen
Cynthia Ballheim
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The Right Angle
Deanna Shostak
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What Is a Good Mathematics Teacher? How Do We Find One?
John C. Egsgard
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NCTM Standards in Action The Measurement Standard
Klaus Puhlmann