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This science fair project idea investigates how a bottom keel helps keep a boat from rocking back and forth.

This science fair project idea investigates how the height at which a pendulum is released affects the length of time it continues.

Help your own young scientist tackle the wonders of static electricity from the comfort of his own home!

This cool science fair project teaches kids about temperature, density and buoyancy using balloons that float with normal air. No helium required!

In this cool engineering science fair project, kids learn how to build Hero's engine: an enlightening example of Newton's third law.

Teach your kids about entropy with this fun, easy exercise, and teach your money to dance while you're at it!

Help your second grader observe the phases of the moon, and then let the fun loose: he'll get to chart his observations with marshmallows!

Put your second grade scientist to work this Fourth of July with our colorful "liquid fireworks" project!

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.

Using scherenschnitte, your science-savvy second grader will be able to create and display each part of a vegetable!

Delight your budding scientist with this cool physics magic trick and teach her some basic physics concepts while you're at it!

Slip some science into storm watching with a homemade rain gauge!

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

Kids will learn how to make a thermometer to to explore liquid density in this great science fair project. Which liquids are affected by temperature the most?

Do you think heat can affect a plant's growth rate?

We all know that the Moon has different phases, but it can be hard to figure out why. Try this activity to see how the Moon's phases really work.

This will encourage your child to utilize their observation skills, develop aesthetic awareness, build artistic drawing abilities and learn about the seasons.

By incorporating natural materials and the powers of observation, your child will become a backyard naturalist while building early writing and drawing skills!

Do you think you could walk around upside down -- with your feet in the air and your head on the ground?

While your cells are much too small to see without a microscope, you can create the look of a cell in your very own home with just an egg and vinegar!

The objective of this science fair project is to explore the relationship between acidic and basic compounds.

Is it a square or a circle? See if you can trick your friends with this zany science project!

In this science fair project, kids will be able to see where germs reside on their hands while gaining insight into the benefits of thorough hand washing.

This science fair project idea explores if the length of the string that an object is suspended on has an effect on how fast or slow it swings.

What is persistence of vision? With this hands-on science fair project idea, students will demonstrate this cool and dramatic phenomenon in their own classroom.

In this exciting and empowering challenge, your child will construct a bridge using marshmallows and toothpicks!

Before Twitter, birds were the ones tweeting, not humans. Have your child discover the magical sounds of nature while recording birds around his neighborhood!

Is it solid or liquid? Create oobleck and witness the amazingly weird oscillation between the two!

Learn about nature by making your own mini moss garden.

How does salinity affect the point at which water freezes? Kids will find out by performing this cool melting ice experiment.