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Plants and light seem to be good buddies, but how far does the friendship really go?

Play with balance and simple engineering as you hurry to create a sturdy rock tower.

Gather some friends for a bubbly soda taste test do determine calories' role in your favorite drinks.

In this fun science fair project idea, kids will experiment with various methods in order to discover the fastest way to cool a soda.

Kids will learn how to make a steam powered rocket boat, also called a putt putt boat or a pop pop boat, in this great science fair project for 4th graders.

In this popcorn experiment, students can explore how two things made out of the same material can have very different appearances and densities.

What do worms eat? Kids find out what kinds of rotting leaves and vegetables worms prefer in this cool compost science fair project.

Kids conduct a cool balloon rocket experiment in this fun science fair project idea. Does a greater volume of air mean a greater distance traveled?

Brine shrimp usually live in saltwater. Investigate how salt concentration (salinity) affects the rate at which brine shrimp eggs hatch.

This science project teaches students to classify different shapes of leaves.

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

Check out this cool science fair project idea to explore the risk of mechanical deterioration of artifacts placed in a storage box due to mold outbreaks.

This science project teaches students about organic farming and the benefits and disadvantages of commercial plant food.

This science fair project idea creates a sedimentary rock and to investigate what takes place during the rock cycle.

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.

How does a flashlight work? Kids will make a complete circuit and explore how voltage contributes to brightness with this science fair project idea.

Could there be toxic chemicals lurking in the cupboards and closets of your home?

What causes dilated pupils? Young scientists will find out by applying what they already know about changes in pupil size and making models of the pupil.

This science fair project idea explores whether mint, known for its âcooling sensationâ really does lower temperatures.

Can you fool your eyes and your brain with an optical illusion? The purpose of this science fair project is to demonstrate various kinds of optical illusions.

Science fair project in which you will learn more about the natural world by preserving and identifying different animal tracks.

Get down to the rubber with this science project that tests the effectiveness of different types of erasers.

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 idea is a great way for kids to explore static electricity. Kids will give a comb a static charge and watch as it separates pepper from salt.

In this experiment, students will create their own version of coquina, a sedimentary rock thatâs formed by seashells and sand, cemented by seawater minerals.

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

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

Discover that the absorbency of fabrics depend largely on the shape and structure of the individual fibers that make up the fabric.

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?

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.