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Kablaster We used to call 'em Ker-Bangers, and they were attached to a string...and they were more dangerous. That's ok though..we didn't wear bike helmets either.. Demonstrate conservation of momentum with this great Physics Toy! Swing one ball and flick your wrist..when the first ball strikes the second it stops dead, transferring it's kinetic into the second ball, which swings around...etc, etc. This toy gets picked up and played with more than most others at our Activity Center. Very cool. Ages 5 to Adult |
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