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.

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 compares the rate of temperature change and the maximum temperature as a result of the angle of light radiation.

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

Here's a math, science, and social studies activity: help your kindergartener become a "coin archaeologist" by examining how different coins look and feel.

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.

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