Description - Scientific American, Simple Science Fair Projects, Grades 3-5 by Bob Friedhoffer
"EVERYTHING YOU NEED TO KNOW FOR SIMPLE SCIENCE FAIR PROJECTS. Learn Experiments that help you to: Store and release energy. Remove heat from an object. Understand how a jet engine works. Build and operate a siphon. Featuring experiments in: Gravity. Energy. Air and Water Pressure. Friction. Motion Light. Perception. Biology. Grades 3-5"
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Scientific American, Winning Science Fair Projects, Grades 5-7
