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Is it amplitude? Weight? Length of string? Kids will discover what factors changing the period of a pendulum depends on in this fun and easy physics experiment.

In this cool physics experiment, use double plane mirrors at various angles to learn about light reflection. Then, see if you can solve a puzzling problem!

In this science fair project, learn how to make gears and find out why they transmit torques in predictable ways.

Learn about the layers of the Earth and make a model! Create a earth layer book, cake, or clay diagram.