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Amanda K. Riske, Catherine E. Cullicott, Amanda Mohammad Mirzaei, Amanda Jansen, and James Middleton

We introduce the Into Math Graph tool, which students use to graph how “into" mathematics they are over time. Using this tool can help teachers foster conversations with students and design experiences that focus on engagement from the student’s perspective.

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Günhan Caglayan

Tangent circles, sequenced to form annular Steiner rings, are photographed in the windows of ancient buildings.

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Victoria Weber, Nicholas Fortune, Derek Williams, and Ashley Whitehead

Available apps are used to develop and investigate an optimization problem.

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A set of problems of many types.

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Wayne Nirode

Using technology to solve triangle construction problems, students apply their knowledge of points of concurrency, coordinate geometry, and transformational geometry.

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A set of problems of many types.

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Aaron Trocki

The advent of dynamic geometry software has changed the way students draw, construct, and measure by using virtual tools instead of or along with physical tools. Use of technology in general and of dynamic geometry in particular has gained traction in mathematics education, as evidenced in the Common Core State Standards for Mathematics (CCSSI 2010).

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John Donovan, Gregory D. Foley, and Thomas R. Butts

Students analyze items from the media to answer mathematical questions related to the article. This month's clips examine why raindrops do not crush mosquitoes and feature an application of the Pythagorean theorem to baseball. The mathematics involved includes dimensional analysis, ratio and proportion, and the Pythagorean theorem.

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Readers comment on published articles or offer their own ideas.

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A set of problems of many types.