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

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

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.

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

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.

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

This is a quick, easy science fair project that conveys the idea of density to preschool and early elementary children.

In this science fair project, young children will become aware of and have the opportunity to experience the four basic tastes: sweet, sour, salty, and bitter.

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

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 investigates which objects float and sink in honey, water, and oil.

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

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

This project examines whether people's taste perception is influenced by what they see.

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.

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

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

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

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

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.

Milk is made of water and fat; but how can you separate the two? Find out in this color changing milk experiment.

This classic children's game demonstrates how sound travels through air vs. through a solid.

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.

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

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

This classic children's game-connecting two cups with a string-demonstrates sound's ability to travel through air vs through a solid.

This project explores whether plants can live and grow when "watered" with juice, soda, or milk.

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