• Rates and Taxes

    Featured Lesson Plan

    Grades 9–12: Become familiar with percents and taxes.

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  • CubeNets

    Featured Mobile Game

    Grades 3–8: Determine whether or not a net can form a cube.

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  • KenKen IMAGE Carousel

    Featured Interactive

    Grades 1–12: Improve your calculation skills, logical thinking and persistence with this fun game!

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  • HeartPlot IMAGE ForMainCarousel

    Featured Brain Teaser

    Can you come up with one or more equations to graph a heart on the coordinate plane?

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Calculation Nation

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Monkey

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