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.
Susan G. Staples
David Deutsch and Benjamin Goldman
Reinforce the difference between inductive and deductive reasoning using a small number of points around a circle.
Sarah A. Roberts and Jean S. Lee
Skyscraper Windows, a high cognitive demanding algebra task, addresses the Common Core State Standards for Mathematics.
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.
Jonaki B. Ghosh
By engaging in recursive and explicit reasoning, students gain insight into the nature of fractal constructions.
Use popular culture to draw students' attention to mathematical topics.
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.
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.
Scott J. Hendrickson, Barbara Kuehl and Sterling Hilton
This article explores teaching practices described in NCTM's Principles to Actions: Ensuring Mathematical Success for All. Student thinking, a learning cycle, and procedural fluency are discussed in this article, which is the second installment in the series.