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

In this air pressure science experiment with a balloon and a jar, children will use heat to create a partial vacuum and suck a balloon into a jar.

Water, along with soil and light, is a necessary component for plant growth. So what's better for promoting plant growth: tap water, or rain water?

This project is a vivid, concrete introduction to the basic but important idea that plants need sunlight and water to grow.

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.

The goal of this fun science fair project idea is to microwave candy and investigate: do some colors of M&Ms melt faster than others?

This science fair project teaches about mold. Students will test different foods to see which grow mold the fastest.

Use pepper and soap to discover some fun facts about the properties of water.

This project demonstrates the correspondence between the volume of water displaced by a submerged object and the volume of the object displacing it.

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?

In this science fair project, students discover how sedimentary layers form as sediments like mud, silt and sand settle over time.

This science fair project idea investigates how magnetism can defy the force of gravity.

These science fair experiments demonstrate the chemistry of rust and the oxidation process.

This project determines whether Styrofoam, paper, or plastic cups are best for preventing ice from melting.

Kids will make a beautiful rainbow in a jar and learn what enables different types of liquids to remain distinct in separate layers.

This science project challenges students to study deer behavior in their natural habitat- the feeding patterns, social behaviors, male to female ratio, etc.

Do earthworms like moisture or darkness? Find out as we explore the relationship between earthworms and light.

Start your toy engines -- this is going to be a fast and friction-filled race!

When you rub a balloon on your head, your hair stands up; but is that true for everyone? Does hair color affect static electricity?

Learn how different types of soil affect how animal tracks form in this experiment!

Kids will explore the corrosiveness of soda in this cool science fair project by leaving pennies submerged in soda overnight.

Learn how starch and carbohydrates interact with different solvents in this fun and easy packing peanut science fair project.

The objective of this science project was to build a model of a volcano and observe reaction between different substances, including baking soda and vinegar.

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.

Kids construct a single fixed pulley system to learn how pulleys can make work easier in this cool physics and engineering science fair project idea.

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.

Why doesn't the ocean freeze? Students answer this question by simulating the chemical composition and temperature of arctic waters in their own home.

This science fair project idea determines which method of hand cleansing is the most effective.

With this cool floating rocks project, your child will get some hands-on experience with buoyancy and learn why certain rocks like pumice are able to float.

Do you think you can blow down a sand castle with a mighty wind? Find out which material stands up best to erosion in this erosion experiment.