These instructional materials offer many advantages such as ensuring that students experience mathematics instruction aligned with grade-level standards, providing teachers with consistent, ...

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 ...

This tool allows you to learn about various geometric solids and their properties. You can manipulate and color each shape to explore the number of faces, edges, and vertices, and you can also use ...

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 ...

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 ...

The Product Game is a fun, interactive game that exercises your skill with factors and multiples. This Product Game Investigation was adapted with permission and guidance from Prime Time: Factors and ...

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 ...

The Common Core State Standards (CCSS) are a set of academic standards in mathematics and English language arts/literacy (ELA) developed under the direction of the Council of Chief State School ...

There are many fun and innovative ways to celebrate Pi Day in your classroom and beyond—you probably already use it as a jumping-off point for key mathematical lessons. If you're in need of something ...

E-seminars are recorded professional development webinars with facilitator guide and handouts. E-seminars are free for NCTM members. Webcasts of Annual Meeting Keynote Sessions offer notable and ...

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 ...

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 ...