October 2025 - We're launching a short, quarterly Advocacy Newsletter to keep you informed about how NCTM is working to advance policies at the federal level that support mathematics teachers, ...

With only 22% of seniors at or above NAEP Proficient and 45% below Basic, the nation must pivot from a singular focus on the top quartile to engaging all students in meaningful, real-world mathematics ...

The Designing Innovative Lessons and Activities for Mathematics Teaching Grant is sponsored by the Mary P. Dolciani Halloran Foundation. This grant supports the research-and-writing of mathematics ...

Log in and then download this digital certificate of participation and self-document your participating hours. Your school or district determines the acceptance of ...

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 ...

A teacher shares strategies for helping students communicate their thinking about mathematics.

Choose a polygon, and reshape it by dragging the vertices to new locations. As the figure changes shape, the angle measures will automatically update. Animation: For triangles and quadrilaterals, you ...

This interactive pan balance allows numeric or algebraic expressions to be entered and compared. You can "weigh" the expressions you want to compare by entering them on either side of the balance.

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.

Pi Fight is designed to help students become comfortable with using both radians and degrees. Choose between radians, degrees, or a combination of both to hit Okta, the octopus. Choose between radians ...

Do you, your school, or your district attempt to ensure that all students have access to mathematics learning opportunities that are rigorous, challenging, and affirming of their identities as ...