Students analyze the structure of algebraic expressions and a graph to determine what information each expression readily contributes about the flight of a horseshoe. This task is particularly ...

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 ...

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.

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 ...

The purpose of this lesson is to use the geometry of regular polygons inscribed in and circumscribed about the unit circle to create an algorithm for generating the digits of π, known to be the area ...

As a mathematics educator or researcher, your passion is ensuring that all students receive the highest quality math education possible. Membership in NCTM means access to the resources you need to ...

Thinking about numbers using frames of 10 can be a helpful way to learn basic number facts. The four games that can be played with this applet help to develop counting and addition skills. (This ...

Bobbie Bear is planning a vacation and wants to know how many outfits can be made using different colored shirts and pants. Click on a shirt or a pair of pants and drag it over Bobbie Bear. Release ...

The foundations for geometric thinking are laid early. Basic shapes, structures, and locations, along with colors and sounds, are some of the first things infants learn to recognize. From day one, ...

Formative assessment is any assessment task designed to promote students' learning. These tasks give both teachers and students feedback, so that teaching and learning activities can be altered ...

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 ...

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 ...