Using a toy race car kids create a visual model of the Doppler Effect.

This science fair project idea produces varying pitches of sound.

In this project, learn about animal vision and different kinds of eyes: ocelli, compound eyes, and camera eyes. Find out what a jellyfish or grasshopper sees!

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.

In this science fair project, students use the streak test to tell minerals apart from each other.

Glass is see-through, but usually you can still see that it is there. In this experiment, we use baby oil to make glass go completely invisible.

This science fair project idea investigates the hardness property of minerals.

Did you even wonder why some rocks are round and smooth while others are broken up into small pieces?

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

Kids will discover the meat science behind the meat they eat, and find out how to use safe chemistry to make meat more tender.

While your cells are much too small to see without a microscope, you can create the look of a cell in your very own home with just an egg and vinegar!

Find out whether soil amendments can improve soil conditions and help you grow a bigger beanstalk in this ecology experiment!

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.

Can you increase the light and plant growth in your garden using mirrors? In this experiment, measure light reflection and find out!

Learn about this simple machine and make a pulley of your own to use for fun science trials.

In this science fair project, students make their own rain gauge to measure rainfall.

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

Test out the pH levels of soil in your backyard versus soil in more wild environments to solve this science case.

In this science fair experiment, children demonstrate the relationship between the amount of stuff and the amount of pressure in a closed system.

Will increasing the amount of salt in water effect how slow or fast the water freezes?

Discover how to make fake snot with this cool science fair project idea to learn about polymers, enzymes, and more.

Have you ever noticed the ridges on a dog's nose? In this project, we take several dogs' nose prints and discover just how unique they are!

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.

Cleaning can be a chore, but not with this sudsy experiment!

Is it amplitude? Weight? Length of string? Kids will discover what factors changing the period of a pendulum depends on in this fun and easy physics experiment.

This science fair project idea investigates the ability of different whitening toothpastes to whiten teeth.

How would you dry your wet clothes if your dryer didn't work? Find out with this fun experiment!

This experiment examines whether storing your orange juice at different temperatures affects its acidity.

This project explores whether nails, toothpicks, straws, or pen nibs are best for applying ink to paper.

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