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From zippers to the Pyramids, rolling pins to catapults, we are surrounded by simple machines. This book will amaze kids with the ingenuity they already possess and inspire them to look differently at the objects they use everyday. Explore Simple...
Does your coat have a zipper? Did you eat breakfast with a fork? You're using simple machines! From butter knives to seesaws, rolling pins to catapults, we are surrounded by simple machines! Simple Machines! With 25 Science Projects for Kids...
