Scientific American, Winning Science Fair Projects, Grades 5-7, Paperback/Bob Friedhoffer
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EVERYTHING YOU NEED TO KNOW FOR WINNING SCIENCE FAIR PROJECTS Learn Experiments that help you to: Build Electric Circuits Create an Object that Has Only One Side Break Light into its Component parts Create Static Electricity Discover How Light Works Find Out Why Earth Rotates and What Keeps Us on the Ground Examine How Waves Work Discover Your "Green Thumb" Featuring Experiments in: Electricity Electromagnetism Gravity Plant Growth Light and Optics Surfaces Reaction Time Centrifugal Force Sound Waves Grades 5- 7
Scientific American, Winning Science Fair Projects, Grades 5-7, Paperback/Bob Friedhoffer
47,60 RON