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 ...

Illuminations works to serve you by increasing access to quality standards-based resources for teaching and learning mathematics, including interactive tools for students and instructional support for ...

NCTM established the Mathematics Education Trust (MET) in 1976 to support the mathematics education community by funding grants for preservice teachers, in-service teachers, coaches, teacher-leaders, ...

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 ...

Use this interactive tool to create dynamic drawings on isometric dot paper. Draw figures using edges, faces, or cubes. You can shift, rotate, color, decompose, and view in 2‑D or 3‑D. Start by ...

All content found in the Illuminations Web site—including text, graphics, logos, button icons, images, audio clips, applets, activities and programs, as well as the collection, arrangement, and ...

This July, MTLT Teacher Talk will meet to talk about an article from the legacy journal Mathematics Teaching in the Middle School: “Tech-Knowledgy and Diverse Learners” by Jennifer Suh.

Throughout this lesson, students will think about some questions individually, then share solutions and discuss their mathematical thinking with a partner. Afterwards, the pairs will share their work ...

This summer, join us in the vibrant city of Chicago for a unique and energizing professional learning experience—the Joint Conference for Elementary Literacy and Mathematics, hosted by the National ...

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 ...

From Standards to Success; Creating pathways for each and every learner.

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 ...