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December 2013, Volume 19, Issue 5

FEATURES

The Great Mathematician Project
Sabrina R. Goldberg
Introduce mixed-ability classes to a project exploring famous mathematicians and scientists and ignite students’ math interest.

If Only Clairaut Had Dynamic Geometry Tools- FREE PREVIEW!
Hyewon Chang and Barbara J. Reys
Using Clairaut’s historic-dynamic approach and dynamic geometry tools in middle school can develop students’ conceptual understanding before they encounter formal proof in geometry.

Orange You Glad I DID Say “Fraction Division”?
Alfinio Flores and Melina D. Priewe
Students explore multiplicative comparisons and the meaning of remainders using their own concrete representations, including orange wedges.

CCSSM Challenge: Graphing Ratio and Proportion
Signe E. Kastberg, Beatriz S. D’Ambrosio, Kathleen Lynch-Davis, Alexia Mintos, and Kathryn Krawczyk
A Cherry Syrup problem can build links between ratio and graphing.

Music Cards
Anne Roche and Doug M. Clarke
Students display a wide variety of creative mathematical thinking and misconceptions when they complete a classroom task that focuses on proportional reasoning.