Estimate the age of your schoolyard trees with this grades 3–8 lesson plan.
Check out our latest game, Pi Fight! How comfortable are you with radians and degrees?
Use this tool to explore many different geometric properties and shapes.
Write the numbers from 1 through 19 in the circles so that the numbers in every 3 circles on a straight line total 30.
Play online math strategy games against players from around the world.
Challenge students and mathematics enthusiasts with these puzzles.
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