Build Your Own Chain Reaction Machines: How to Make Crazy Contraptions Using Everyday Stuff--Creative Kid-Powered Projects! PG_Gift_Guide Ahn presents key insights from

Ahn presents key insights from her years of teaching and research in a book for everyone

From the authors of Quackery

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Build Your Own Chain Reaction Machines: How to Make Crazy Contraptions Using Everyday Stuff--Creative Kid-Powered Projects! PG_Gift_Guide Ahn presents key insights fromWith Build Your Own Chain Reaction Machines, youll create 13 zany and awesome mechanical contraptions using stuff from around the house. Build Your Own Chain Reaction Machines invites you into the wonderful world of crazy contraptions inspired by the amazing artwork of renowned cartoonist, engineer, and inventor Rube Goldberg, whose wacky, imaginary machines accomplished a simple task by taking a hilariously complicated route. In this entertaining and