Studying levers couldn't be more exciting! Learners build their own catapults and test the results as they make adjustments to the fulcrum. They compete against other groups to create the most accurate apparatus.

Fourth graders participate in a game reflecting the solar system, stars, and rockets. They simulate how space invaders move and hit stars and rockets. They discuss how scientists study the stars and planets.

Students, in groups, construct a catapult. Then they conduct a series of experiments by catapulting a marshmallow, using different lengths of spoons, across the room. They predict, measure, and record the measured distance on a worksheet.

Eighth graders examine the formation of craters. For this craters lesson, 8th graders discover the various energies involved in the formation of a crater, where you can find a crater in the Solar System, and observations of craters on...