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This science fair project demonstrates the magic of arches by challenging students to stack telephone books on top of eggs without breaking them.

In this science fair project, students test how objects float and sink in liquids of different densities.

This science fair project idea investigates how the shape of an object affects drag.

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.

Young physicists will wrestle with a discrepant event: the Hammer Ruler Trick. They'll make some inferences about torque, balance, and center of gravity.

Check out this fun middle school science fair project idea on Newton's third law of motion and how you can change the speed of a rocket.

Check out this cool science fair project idea that models the behavior of the cold desert plants: xerophytes and halophytes.

Science fair project that determines whether wireless networks damage living plants. Are WiFi radiation hazardous to your health?

This project examines whether corked bats truly make a ball travel farther than wooden bats that haven't been altered.

Science fair project that uses distillation to convert salt water into fresh water.

Science fair project in which you will examine how crystals are formed by creating your own crystal using charcoal briquettes, salt, and ammonia.

Bake some cookies with an oven that collects sunlight and traps the shorter wavelengths (heat!).

Check out this fun science fair project idea to measure bacterial colonies from door handles and explore the effectiveness of different cleaning agents.

What's the best way to make DIY compost? Kids will learn about aerobic and anaerobic decomposition while learning to appreciate the value of composting.

This science fair project demonstrates the "power of conformity".

High school kids learn about fruit fly ethology in this cool lab that determines fruit fly movement and behavior under different conditions. Check it out.

Compare the ignition rates of various types of flame-retardant materials.

This super fun science project, perfect for young children, combines crafts, dressing up as animals, outdoor play, and life science learning.

This experiment demonstrates the conservation and transfer of energy using a marble rolling over sandpaper.

How good are humans at sound localization? Kids can try this cool science fair project idea to see how good their friends are at judging sound direction.

This science fair project idea explores the different properties & interactions of sugar molecules.

Science fair project in which you will graft branches from different fruit tree onto a root stalk.

Construct and experiment with a periscope using reflected light rays to gather an image.

This light bulb science project includes step-by-step instructions for testing the heat from different light bulbs.

High school students recreate Michael Faraday's experiment in this cool science fair project that induces current in a coil of wire.

Learn how to make a ping pong ball anemometerâa device used to measure wind speedâin this free science fair project idea.

What is a series circuit and how does it work? Learn about voltage, electrical current, and resistors in this cool science experiment!

Free science fair project idea examining how different types of water affect plant germination and growth.

Make stunning pendulum waves and learn the math behind the patterns generated with this cool and easy science project.

This project explores what happens to a rubber band when it is heated and cooled.