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Stacking cups designed to teach basic math concepts. They’re numbered on the bottom and volumetrically accurate. If you fill cups 1 and 2, for example, they’ll equal the volume of cup 3!
May 31, 2012

Green Toys Inc. - Environmentally Friendly Eco Toys, Safe, No BPA or Phthalates - Made in USA

Stacking cups designed to teach basic math concepts. They’re numbered on the bottom and volumetrically accurate. If you fill cups 1 and 2, for example, they’ll equal the volume of cup 3!

Category: Kids

Source:
greentoys.com
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