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 ...

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 ...

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 ...

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 ...

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 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 ...