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David Deutsch and Benjamin Goldman

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Susan G. Staples

In this article, we consider the generalization of a “solitaire checker puzzle” from the book More Joy of Mathematics, by Theoni Pappas (1991). In addition to presenting the solution to the general case, we shall also investigate the attractive patterns that emerge during the process of solving the puzzle, as well as in analyzing the minimal solutions of various cases.

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Roger Turton

Reinforce the difference between inductive and deductive reasoning using a small number of points around a circle.

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Kasi C. Allen

In this favorite lesson, students must engage in cooperative problem solving and think outside the algebra box as they work to make sense of the Purple Milk problem.

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Sarah A. Roberts and Jean S. Lee

Skyscraper Windows, a high cognitive demanding algebra task, addresses the Common Core State Standards for Mathematics.

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Teo J. Paoletti

This historically significant real-life application of a cryptographic coding technique, which incorporates first-year algebra and geometry, makes mathematics come alive in the classroom.

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Elana Reiser

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

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Sarah K. Bleiler-Baxter, Sister Cecilia Anne Wanner O.P., and Jeremy F. Strayer

Explore what it means to balance love for mathematics with love for students.

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Jonaki B. Ghosh

By engaging in recursive and explicit reasoning, students gain insight into the nature of fractal constructions.

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Mark Pinkerton and Kathryn G. Shafer

An action research study focuses on the teaching strategies used to facilitate Problems of the Week.