Gumball Machine Maker DIY Physics & Engineering STEM Experiment
Por um escritor misterioso
Descrição
Product Description Super sweet stunts! Build your own gumball machines and learn physics lessons in the process. A turn of a handle dispenses one gumball at a time out of the clear storage globe and down the track. The gumballs land in a collection cup and can easily and sanitarily be returned to the globe for another
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