Thank you for your interest in NCTM’s Illuminations. Beginning in mid-April, all Illuminations content will be moving to nctm.org/illuminations. Interactives will remain openly available and NCTM members will have access to all Illuminations lessons with new filtering and search options. We hope you will continue to utilize and enjoy these resources on nctm.org.

With this tool, you can explore how to decompose shapes and recompose
them to make other shapes. You can draw and cut shapes and also use
slides, turns, and flips to move pieces around.

The applets in this Interactive Geometry Dictionary (IGD) will show you how to find the area of some common shapes: rectangles, triangles and parallelograms.

Help Okta reach the target by
choosing a path from the top of the maze to the bottom. Seven levels with seven
puzzles will test your skills with powers of ten, negative numbers, fractions,
decimals, and more. How many starfish can you earn?

If you would like to rate this lesson, then please register. Riuscipisci bla feummod
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