• TreeTalk IMAGE HomePageRotatingBanner

    Featured Lesson Plan

    Estimate the age of your schoolyard trees with this grades 3–8 lesson plan.

    read more
  • PiFight Screenshot

    Featured Mobile Game

    Check out our latest game, Pi Fight! How comfortable are you with radians and degrees? 

    read more
  • ShapeSorter IMAGE

    Featured Interactive

    Use this tool to explore many different geometric properties and shapes. 

    read more
  • From1Through19

    Featured Brain Teaser

    Write the numbers from 1 through 19 in the circles so that the numbers in every 3 circles on a straight line total 30.

    read more

Challenge others. Challenge yourself.®

Calculation Nation

Play online math strategy games against players from around the world.

2 gamers currently online

Test your skills.
Tease your brain.

Monkey

Challenge students and mathematics enthusiasts with these puzzles.

Your Success Defines Our Success.

SuccessStoryThumb

Read and share experiences of how people have used Illuminations’ resources.

Bright Ideas Sign-up

Welcome to Bright Ideas, the e-newsletter of Illuminations. Once a month, this newsletter provides resources, information and new ideas to interested teachers.