Science fair project in which you will learn more about the natural world by preserving and identifying different animal tracks.

This science fair project idea experiments with spinning color wheels and optical illusions.

What causes dilated pupils? Young scientists will find out by applying what they already know about changes in pupil size and making models of the pupil.

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.

The goal of this project is to create an exciting topographical map out of dough.

This science fair project idea provides evidence that air is everywhere and takes up space.

In this science fair project, we'll use a liquid crystal thermometer to find out whether exercising makes a difference in people's temperature.

This science fair project idea examines whether boys and girls differ in reflexes.

Would it hurt to skip brushing your teeth just this once? Let's find out by seeing which foods produce the most mouth bacteria.

Have you ever wondered how many numbers most people can memorize? Test your friends to find out!

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

This science project lets students explore the number of spots on a ladybird and how to treat ladybugs with respect.

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

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

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

Discover flight initiation distance as you play around in the park with this fun bird watching project!

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.

What does a raindrop look like when it splashes on the ground? Is each raindrop unique like snowflakes? Find out how raindrop size varies in this experiment.

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!

This science fair project idea teaches how the gases and pollution in the air affect the earth's atmosphere temperature.

In this fun science fair project, make two different scale models of our solar system using Astronomical Units and planets' relative size!

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

What's the difference between a microwave and an oven? Use mashed potatoes to explore which kitchen appliance does a better job at keeping food warm.

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

Observe how your brain works while it is focused on one thing, and how it works while you are distracted by another thing.

Take a dive into the candy jar with this yummy science experiment.

How does a compass work? What's a magnetic field? Kids will build their own compass at home to find the answers in this great science fair project idea.

What are the effects of fertilizer on plant growth? What's the best fertilizer type (solid, liquid or powder)? Kids find out in this science fair project idea.

Kids will make predictions about cricket behavior by conducting this fun and easy experiment which simulates different environments for crickets.