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Dionne I. Cross, Olufunke Adefope, Mi Yeon Lee, and Arnulfo Pérez

Kindergartners and first-grade students listen excitedly to a modified storybook to guide their geometry activities.

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Johnnie Wilson

Observe a first-grade teacher's use of gesture as a mathematics teaching and learning tool in his classroom.

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Annie Perkins and Christy Pettis

This student problem explores how many different triangles can be produced on a geoboard.

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Ariel Robinson

This preschool teacher uses differentiation and scaffolding techniques as she reads an informational text about patterns with her young students.

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M. Katherine Gavin and Karen G. Moylan

Research-based actions and practical ideas for implementation can help shape your differentiated instruction.

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Tutita M. Casa

This instructional tool helps students engage in discussions that foster student reasoning, then settle on correct mathematics.

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Annie Perkins and Christy Pettis

Students are asked to solve a problem that involves viewing the characteristics of a square.

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Elaine Cerrato Fisher, George Roy, and Charles (Andy) Reeves

Be inspired by a formerly timid third grader who now confidently conveys a new understanding of numbers, patterns, and their relationships as functions.

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Florencia Park and Hannah Lee

Geometry is much more than learning vocabulary and identifying shapes; it involves developing spatial sense—an intuition about shapes and the relationship between them. In this Let's Build It activity, students reason about geometric shapes and their attributes as they use newspaper dowels to build two- and three-dimensional structures.

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This department showcases students' in-depth thinking and work on problems previously published in Teaching Children Mathematics. The November 2011 problem scenario has students explore several rich, mathematical ideas, such as square numbers and the commutative property of multiplication.