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In this science fair project, apply the principles of leverage and force by building six simple machines designed to set weights in motion.

This science fair project idea determines the most effective method of preserving food.

What is mulch? Kids will provide soil with a wet blanket of mulch and see if that helps keep drought-stricken soil damp.

Ant behavior is closely related to light intensity. This free science fair project idea examines how fast ants dig when they are exposed to to light and dark.

Science fair project that compares the ecology of different soil samples by identifying which sample has the most invertebrates living in it.

This science fair project idea builds models of various types of bridges and then determines which bridge design is the strongest.

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

In this science fair project, learn how to make gears and find out why they transmit torques in predictable ways.

Examine the effect of pressure on carbonation in soda.

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

Science fair project which determines whether plants are able to get enough nutrients from different types of garbage.

Have your child kick off their summer vacation by making a miniature water slide!

Kids get step-by-step instructions for how to make a rubber band car and explore the physics of potential energy with this fun engineering science fair project.

This science project uses Mohsâ Hardness Test to show kids how to compare the hardness of different types of minerals.

Science fair project that determines whether lettuce that is harvested gradually yields more produce than lettuce that is harvested all at once.

This science fair project idea explores whether the process used to dry the beans we eat for food renders them unviable.

Collect meteorite dust with a magnet in your very own backyard! The objective of this science fair project is to gather meteorite dust to study outer space.

This basketball project explores the best way to make the perfect shot every time.

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

This science fair project idea determines if the temperature of rubber effects how high it bounces.

In this fun activity, your child will create their very own solar oven to bake s'mores!

Science fair project that develops latent fingerprints on a non-porous objects by converting superglue from a solid state to a gaseous state.

Find out which type of sponge holds the most water.

Explore how sound waves are reflected and absorbed by producing echoes. Analyze which locations produce echoes.

Does skin thickness really decrease fruit spoilage? Find out in this science fair project idea!

Learn about the effect of artificial light on plant growth versus natural sunlight and delve into some biology and botany concepts in this science project.

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

Will the shape of an ice cube impact how fast the ice melts?

Science fair project that compares the biodiversity of fungi in different ecosystems by identifying species of fungi.

This science fair project explores how osmotic pressure forces water through the root up into the plant.