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Marlena Herman and Jay Schiffman

The process of prime factor splicing to generate home primes raises opportunity for conjecture and exploration.

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Sonali Raje, Michael Krach, and Gail Kaplan

Stereochemistry and three-dimensional analysis constitute significant parts of this student activity.

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Teo J. Paoletti

This historical—and classroom friendly—approach to the concept of infinity uses Cantor's proofs of cardinality.

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Yong S. Colen, Channa Navaratna, Jung Colen, and Jinho Kim

The 2000 presidential election provides an ideal backdrop for introducing the electoral voting system, weighted voting, and the Banzhaf and Shapley-Shubik Power Indices.

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Michael J. Bossé and Kwaku Adu-Gyamfi

A geometry course for teachers—easily adaptable to a high school geometry class—integrates technology, reasoning, communication, collaboration, reading, writing, and multiple representations.

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Bethany A. Noblitt and Brooke E. Buckley

Participants race across a university campus, completing challenging mathematical tasks that correspond to NCTM's Standards.