Board of Directors Election. NCTM members will be electing a President-Elect and four new Board members to the Board of Directors this spring. The Board of Directors sets the ...

Help your students explore the world with Notice, the snail, and Wonder, the owl. These two friends discovering that math is all around them. Notice and Wonder provide fun and engaging mathematics ...

Help your students explore the world with Notice, the snail, and Wonder, the owl. These two friends discovering that math is all around them. Notice and Wonder provide fun and engaging mathematics ...

This tool allows you to create any geometric shape imaginable. Squares, triangles, rhombi, trapezoids and hexagons can be created, colored, enlarged, shrunk, rotated, reflected, sliced, and glued ...

The NCTM Spring Conferences provide dynamic, face-to-face networking and learning opportunities for mathematics educators across the nation. These opportunities are a great way to engage with your ...

The Factor Game is a two-person game in which players find factors of numbers on a game board. To play, one person selects a number and colors it (as shown below in blue). The second person colors all ...

This applet allows for the discovery of the incenter and incircle of a triangle.

Writing for a department is a great way to begin writing for our profession. Department articles are often drawn from your daily interactions with students. If it is of interest to you and your ...

These grade-band specific professional learning modules are focused on the Effective Teaching Practices and Guiding Principles from Principles to Actions: Ensuring Mathematical Success for All.

A rhombus has four congruent sides. A rectangle has four congruent angles. But a square has four congruent sides and four congruent angles. Using a Venn diagram, the relationship would look like this: ...

This applet allows students to individually practice working with relationships among fractions and ways of combining fractions. For a two person version of this applet see the Fraction Track ...

Use this tool to strengthen understanding and computation of numerical expressions and equality. In understanding equality, one of the first things students must realize is that equality is a ...