• Wonderworld Counting Ball

Wonderworld Counting Ball

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Wonderworld Counting Ball A new concept in mathematical learning is now available with the Wonderworld Counting Ball Manual Numbers Discovery Set. The Wonderworld Counting Ball Manual Numbers Discovery Set is a toy that encourages learning the dynamics of subtraction and addition through the use of five colored balls, a knob and a lever. Equipped with an upper and lower level, the Wonderworld
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