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 project children discover, identify, and sort seeds from a variety of fruits and vegetables

In this science fair project, young children notice and track changes in trees throughout the year.

In this project combining nature, art, math, and science, children make rubbings of leaves then observe shapes and structures and sort the leaf images.

This engaging project encourages young children to practice and refine the important scientific skills of sorting and classification.

Investigate how to keep your fruit fresh for longer. The purpose of this science experiment it to determine which kind of bag best preserves fruit.

This science project teaches students the relationship between compost and plant growth. Students conduct an experiment with different types of compost.

This project determines the age of a tree using a growth factor chart instead of cutting the tree down to count the rings in its base.

Science fair project that determines whether landscaping fabric impacts the ability of plants to receive water.

Children have a naturally inquisitive mind. Foster their curiosity with a walk through an autumn field or park to answer age-old “why” questions. As you walk with your child, you can encourage them to ask questions.

Find out whether we can create motion in a dish and as a result, create a wonderful and colorful show.

Learn how to be a bird scientist in this simple project of watching feathered friends in their habitat.

Uh-oh! Is that a pill sitting on the counter or a piece of candy?

Science fair project which determines which colors of light allow plants to produce the most chlorophyll. How are color and light related to each other?

Find out if most people can distinguish the difference between tones on different instruments.

Science fair project which compares the rate of temperature change and the maximum temperature as a result of the angle of light radiation.

This project examines whether humans can intuitively grasp numeric values greater than three.

Determine the growth rates of different types of human hair. Ask volunteers to not cut their hair until the end of experiment. Measure hair length.

Check out this cool science project idea to explore how temperature creates annual rhythms that govern plant growth.

The purpose of this project is to determine if there are fluctuations in the rising and the setting of the sun and the position of the earth as it rotates.

This experiment will explore whether adding different substances to a gel affects its strength.

This science fair project idea examines if there is a reason that musical notes are at the pitches they are.

Students explore hot desert plant adaptations in this cool science fair project by observing how these organisms prevent excessive transpiration.

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.

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

This science fair project idea explores whether there is a connection to the color a person wears and the way their emotional state is perceived by others.

What's the science behind those out-of-sight roots? Find out if you can trick roots into growing in different directions.

You've heard all about oil spills, but can they really be that bad? After all, vegetable oil is in almost every yummy baking good from cookies to brownies.

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.

This science fair project idea highlights decomposition rates by comparing how long it takes an item to decompose in a compost pile vs. a landfill.