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

In this free science fair project, learn how to separate salt from water using heat. A great science project for elementary school kids.

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?

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.

It's not actually that hard to get energy from garbage! Kids learn how to make biogas in the form of methane with this cool and easy science fair project idea.

In this science fair project, kids observe the expansion of liquids when frozen and determine if some liquids expand more than others in the freezing process.

Build a 3d animal cell model with this cool science fair project, which helps kids visualize and understand the function of a cell's parts and organelles.

What causes the seasons to change? Kids find out by modeling the earth's tilt using a globe, flashlight and graph paper in this cool science fair project idea.

Kids learn how to prevent erosion by growing grass. They'll test soil with grass against raw soil in this revealing science fair project idea for 4th grade.

Do hand soaps and sanitizers prevent the growth of bread mold? If so, why? Kids will find out with this fun and informative science fair project idea.

This science fair project idea teaches that time always passes at the same rate and nothing we do in our daily life âreallyâ affects how fast it moves.

What animals are most popular? This project affords practice in data-collection, record-keeping and data-analysis through the investigation of this question.

In this project students experiment with making music using only glasses of water.

This science project encourages students to investigate the Mozart Effect, the idea that classical music promotes learning.

Did you know a mouse eats almost fifty times as much as a cow? Find out how and test out the strange science with your friends!

Science fair project about work and energy which uses a simple mathematical formula to predict how far a jar will roll down an incline.

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

In this sound experiment children listen for differences as they tap on a bag of air, a bag of water, and a wooden block held up to their ears.

This science fair project idea investigates how color affects temperature.

This science fair project idea explores whether a plastic slinky works as well as a metal slinky when walking it down the stairs.

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

This super fun science project, perfect for young children, combines crafts, dressing up as animals, outdoor play, and life science learning.

This project investigates the affect of storage temperature on microwave popcorn.

This science experiment has students test whether a snail moves faster on concrete or dirt.

Does dough rise faster with unbleached or bleached flour? Investigate in this science fair project idea.

Examine the effect of pressure on carbonation in soda.

The objective of this science project is to determine the length of time for different seeds to germinate.

There are many benefits to bugs and insects. This science project shows how cockroaches, termites, and other critters benefit our planet.

Learn about sound physics and do a survey experiment to explore the difference between sound and noise in this science project.

Science fair project that teaches you about chemical indicators and how to make your own in order to identify various mystery solutions.