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Shopaholic Carla’s just found the cutest pair of shoes! And – even better – she did the math and found out they’re FREE!… or are they? Does 40% off plus an additional 60% off really mean these shoes are free?

Math Mess is a local public television program presented by WVIZ and PBS Ideastream.

Related Lessons

  • Lesson 207

    Explore the Multiply by 7 facts using the grouping of objects and arrays. Compete against characters to see who finds the product first. Practice with the commutative property of multiplication and 7's. Use multiplication facts you already know to help find the product when one factor is 7.

  • Math Mights - Kindergarten

    Lesson 207

    Warm up with a Mystery Math Mistake to tell whether Dotson's 10-frames represent a number more than his focus number. Examine a train to find shapes. Put together shapes to make familiar objects.

  • Math Mights - 1st Grade

    Lesson 207

    Warm up with a Mystery Math Mistake to add 9 and 5 using a double 10-frame and a decompose strategy. Use near-doubles to add with double 10-frames and a compensation strategy.