Happy/Sad Ball Kit

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Product Number: SB33947

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Two rubber balls that look, feel, and squeeze the same - but try bouncing them! These intriguing inelastic and elastic collision balls are popularly called happy and sad. One ball rebounds normally while the other is as bounceless as a piece of clay! Instructions included.

WARNING: Choking Hazard. This toy is a small ball. Not for children under 3 yrs.

Item Weight: 0.13
Subject Areas: Physical Science
Brand: Science First
Prop 65:


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