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  • Grades 9-12 x
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Catherine Tabor

A programming activity helps students give meaning to the abstract concept of slope.

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Bobson Wong and Larisa Bukalov

Parallel geometry tasks with four levels of complexity involve students in writing and understanding proof.

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Jason Lee O'Roark

After teaching high school mathematics in Maryland for three years, I began teaching sixth-grade mathematics in one of the best school districts in Pennsylvania (according to state test scores) and have been teaching there for the past six years. My high school teaching background led me to differentiate differently from my colleagues. I share my observations of the result of the differences in methodology and my conclusions from those observations, and I offer a plan to implement changes in the way that mathematics is taught.

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Kasi C. Allen

Collaboration in the mathematics classroom contributes to student learning as well as strengthened preparation for twenty-first-century professions. However, facilitating group work with teenage students can prove challenging. Three strategies for success are establishing a supportive classroom culture; structuring groups and tasks; and nurturing the effort.

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Christine K. Pritchard and John H. Lamb

Teaching a visual subject to a visually challenged student inspires strategies that benefit all students in a class.

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Tongta Somchaipeng, Tussatrin Kruatong and Bhinyo Panijpan

Students use balls and disks to prove the general formulas for sums of squares and cubes.

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Shari L. Stockero and Laura R. Van Zoest

Teachers often have students publicly share their mathematical thinking as part of classroom instruction. Before reading further, we invite you to stop and think about this practice by writing down your responses to the following two questions: