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Stephen Phelps

Edited by Anna F. DeJarnette

A monthly set of problems targets a variety of ability levels.

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Sarah A. Roller, Elizabeth P. Cunningham, and Katherine Ariemma Marin

Use photographs as a formative assessment tool.

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Brandy Crowley and Tracy Harper

What is the most exciting day of the school year? Field trip day! Organizing a smooth field trip requires mathematical thinking. After solving these problems, have students create math questions about their own field-trip experiences.

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Nicole Bannister and Benjamin J. Sinwell

Our favorite lesson helps geometry students learn to use diagrams for thinking and communicating (Sinclair, Pimm and Skelin 2012) and motivates a discussion about similarity. The lesson connects sidewalk chalk-andstring (C&S) constructions of regular hexagons with a dynamic geometry software (DGS) approach.

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Haiwen Chu and Leslie Hamburger

Five types of engaging peer-interaction structures can support English learners as they make sense of mathematics and explore important mathematical relationships.

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Dittika Gupta and Lara K. Dick

Principles to Actions: Ensuring Mathematical Success for All (NCTM 2014) calls for integrating into the classroom real-world activities that connect mathematical ideas to other subjects and contexts. Motivated by the desire to make these connections, we devised a paper airplane design task to engage students in various STEM concepts.

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Edited by Anna F. DeJarnette and Stephen Phelps

A monthly set of problems is aimed at a variety of ability levels.

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Manqian Zhao and Karen Lapuk

These five ideas can help mathematics teachers implement teaching strategies for EL students.