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Elana Reiser

Use popular culture to draw students' attention to mathematical topics.

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Michael Weiss

Core content provides opportunities to focus on the structure of mathematical theory, proof, and anticipation of subsequent topics.

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A set of problems of many types.

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Readers comment on published articles or offer their own ideas.

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Darla R. Berks and Amber N. Vlasnik

Two teachers discuss the planning and observed results of an introductory problem to help students nail a conceptual approach to solving systems of equations.

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Connie Colton and Wendy M. Smith

A multiphase lesson on selling T-shirts guides students from single-variable equations to linear relationships.

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Patricia Wallace-Gomez

Three graphing activities lead students to discover the shapes and properties of the graphs for linear, quadratic, and absolute value functions and inequalities.

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Vincent Kieftenbeld

The author guides readers through an investigation of the efficiency of the Euclidean algorithm, leading to a remarkable connection with the Fibonacci numbers.

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A set of problems of many types.

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Shawn Triplett

Diagonalization of the Fibonacci matrix ties the sequence to geometry.