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 will conduct a cool limewater carbon dioxide test that can be performed with common household materials to learn about the chemistry of this common gas.

This science fair project idea investigates which objects float and sink in honey, water, and oil.

What heats up fasterâwater or soil? 5th grade students test the specific heat of water against the specific heat of sand in this great science fair project.

Your kid can learn about the process of making frozen yogurt and enjoy a homemade, flavorful dessert. Experiment with this fun, chilly food!

Science fair project that demonstrates how stalagmites and stalactites are formed.

For this science fair project, kids will learn how to make a lemon battery. They can conduct this classic experiment using readily available materials.

Learn how to make a weathervane with this fun and simple meteorology project for fourth graders.

Science fair project that guides you through how to test the humidity in the environment using a homemade psychrometer.

Is it solid or liquid? Create oobleck and witness the amazingly weird oscillation between the two!

The goal of this fun science fair project idea is to microwave candy and investigate: do some colors of M&Ms melt faster than others?

Kids explore how a single movable pulley can confer a mechanical advantage over a fixed pulley in this cool engineering science fair project for 2nd grade.

Magnets may hold up papers on the fridge, but is it the paper that attracts them? Find out more with this kindergarten science investigation.

Demonstrate how we are able to locate sounds, echolocation. Have a blindfolded subject locate you by the sound of your clapping.

Make an edible play dough with your child to help her develop her sensory and motor skills.

Here's an investigative activity in which your child will discover real-world names and uses for sugar and find out how it is hidden in many different foods.

Why do ants like sugar? Do ants like artificial sweeteners too? Kids find out with this great inquiry-based science fair project.

Determine which material produces the strongest static charge.

Discover the wonders of simple clay by pressing flowers into a modeling medium!

Did you know that August is American Artist Month? Your child can explore the art of photography by using a digital camera to capture the landscape around her.

Check out this fun high school science fair project idea to investigate how the cell membrane regulates what moves into and out of cells.

Students will investigate the thermal conductivity of metals by learning how to measure thermal conductivity with this fun and easy science fair project idea.

In this fun science experiment, make a balloon car and test it on different surfaces to learn about sliding friction and rolling friction.

This project is a vivid, concrete introduction to the basic but important idea that plants need sunlight and water to grow.

Here's an experiment that will have your child experimenting with cake ingredients to learn about the chemical reactions that happen when a cake's in the oven.

What's the quickest way to separate salt and pepper? Let static electricity do the work! Your child will be fascinated by this simple experiment.

Let your young scientist explore a brave new world of sound with an experiment that just requires a handful of common household items.

In this activity, your kid has your permission to get his socks nice and filthy. In fact, it's a necessity, because those socks are going to make a garden.