As part of its commitment to building and supporting a diverse mathematics teaching field, NCTM is pleased to announce the selection of the 2026-2027 Early Career Teachers Cohort. Over the next two ...

NCTM established the Mathematics Education Trust (MET) in 1976 to channel the generosity of donors by creating grants for preservice teachers, in-service teachers, coaches, teacher-leaders, teacher ...

Use tiles to represent variables and constants, learn how to represent and solve algebra problem. Solve equations, substitute in variable expressions, and expand and factor. Flip tiles, remove zero ...

Considered the “premier mathematics education event of the year,” NCTM Annual Meetings bring together thousands of mathematics educators from all over the world to learn, collaborate, inspire, and ...

When students become active doers of mathematics, the greatest gains of their mathematical thinking can be realized. The process of sense making begins when we create classrooms full of curious ...

Founded in 1920, the National Council of Teachers of Mathematics (NCTM) is the world's largest mathematics education organization throughout the United States and Canada.

A tessellation is a repeating pattern of polygons that covers a plane with no gaps or overlaps. What kind of tessellations can you make out of regular polygons? What shapes tessellate? If shapes can ...

A net is a two-dimensional figure that can be folded into a three-dimensional object. Which of the nets below will form a cube? Click on any net, and determine whether or not it can form a cube. An ...

Quilters and other designers sometimes start by producing square patches with a pattern on them. These square patches are then repeated and connected to produce a larger pattern. Create your own patch ...

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Last month, I attended the Joint Mathematics Meetings (JMM), an annual mathematics conference bringing together diverse members of the mathematical sciences community, including educators, students, ...

Explore interactive tools and resources for teaching and learning mathematics, provided by the National Council of Teachers of Mathematics.