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How do organic materials become soil? This science experiment measures what materials biodegrade.

In this cool science experiment, learn about magnetism and poles, and test magnet strength to find out if two magnets are twice as strong as one.

Understanding absorption means understanding why certain fibers and materials can absorb water! Kids will see absorption in action in this simple project.

This project compares the strength of one, two, and three-ply toilet paper.

For this science fair project, kids will learn how to make a lemon battery. They can conduct this classic experiment using readily available materials.

Kids will conduct a cool limewater carbon dioxide test that can be performed with common household materials to learn about the chemistry of this common gas.

What is elasticity? Students will investigate how this concept applies to bouncing ball physics by testing the bounces of balls made out of different materials.

What is a compound microscope? Kids find out by making one of their own in this cool science fair project.

Observe how your brain works while it is focused on one thing, and how it works while you are distracted by another thing.

Find out whether a longer airplane will fly farther or a wider paper airplane.

This science fair project looks one of the most important factors affecting seed germination: water. A fun and easy plant biology experiment for 3rd graders.

Camouflage is one of the most important animal adaptations in the African savanna biome. Kids create their own camouflage with this fun science fair project.

Did you know your body is full of simple machines? This project looks at one of the third-class levers in the human body: your arm!

What makes your shadow dance around all day? Let's play detective and find out why that sneaky shadow never stays in one place for long.

Free science fair project idea that examines the differences between cats and dogs. Analyze objective qualities rather than subjective ones.

Science fair project that examines the behavior of water and gravel in creek beds and the formation of sedimentary rocks.

This science project explores the concept of being opaque or clear. Can you make something clear opaque? Or something opaque clear?

The objective of this science fair project is to observe the differences in heat absorption for darker colors vs. lighter colors.

This science fair project idea explores substances that cause a bubble to last longer.

In this project children practice the scientific method while playing with puffy paint.

This project investigates the affect of storage temperature on microwave popcorn.

This science fair project examines how seeds hitchhike on animals and clothing.

In this sound experiment children listen for differences as they tap on a bag of air, a bag of water, and a wooden block held up to their ears.

This science fair project idea investigates emulsifiers that allow oil and vinegar to mix.

This science fair project idea determines what household items are good conductors of electricity.

This science fair project idea demonstrates that plants give off water.

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

In this experiment we will be determining whether birds prefer certain colors of seed.

Learn whether Mylar Balloons last longer than Latex Balloons or vice versa.

This science project lets students explore the number of spots on a ladybird and how to treat ladybugs with respect.