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This very cool device consists of a 1.5-inch ball with two small metal electrodes. When the two electrodes...
Solar Boat kit includes complete instruction booklet with 3 solar-powered boat designs, solar panel -...
Celts, sometimes known as or "Rattlebacks", are deceptively simple-looking pieces of molded...
Remember this? The classic center of gravity demonstration.
These popular glasses will delight your students while offering you a cost effective, organized way to...