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Hands-on Science: Simple Machines
Steven SouzaJoseph Shortell
出版Walch Publishing, 2001
主題Education / Schools / Levels / ElementaryEducation / Teaching / Subjects / Science & Technology
ISBN08251426369780825142635
URLhttp://books.google.com.hk/books?id=88YIRcv-DUsC&hl=&source=gbs_api
EBookSAMPLE
註釋Reproducible activities, correlated to the National Science Education Standards, that engage students' minds as they observe, examine & investigate the concepts of force, work, power, efficiency, mechanical advantage, and ramps, wedges, levers, pulleys & gears.