In this 3-part activity, students use paper-folding and an interactive computer sketch to develop the equation of a parabola given the focus and directrix.
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Michael J. Bossé, Kathleen Lynch-Davis, Kwaku Adu-Gyamfi, and Kayla Chandler
Teachers can use rich mathematical tasks to measure students' conceptual understanding.
Heather Lynn Johnson, Peter Hornbein, and Sumbal Azeem
A computer activity helps students make sense of relationships between quantities.
A set of problems of many types
Arsalan Wares
A paper-folding problem is easy to understand and model, yet its solution involves rich mathematical thinking in the areas of geometry and algebra.
Devon Gunter
A hands-on approach to studying quadratic functions emphasizes the engineering design process.
A set of problems of many types
Larry Lesser
Short items from the media focus mathematics appropriate for classroom study.
