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.

With this hands-on activity, you'll show how fall colors are hidden in the leaf all year long!

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.

This simple experiment serves as an introduction to the greenhouse effect.

In this challenge, students are tasked with creating a model roller coaster that a marble can travel through.

Why doesn't the ocean freeze? Students answer this question by simulating the chemical composition and temperature of arctic waters in their own home.

Check out this silly game that will put your kid's animal habitat knowledge (and acting skills) to the test.

Make some easy homemade yogurt with your young scientist, and see what a few 'live' bacteria can do in the right conditions!

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?

How powerful is the reaction between baking soda and vinegar? Find out here!

In this fun science fair project idea learn about universal solvents and solutes and find out the solubility of several common liquid substances.

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

Help your fifth grader trace your family's roots and interview all the living mothers to create a makeshift, 3-D family tree!

Grow borax crystals and get your child excited about Earth science with this crafty science experiment.

Help your child make a beautiful homemade sandcastle that will last!

This science fair project idea measures out the sugar of various foods and find out whether people can correctly determine how much sugar is in common foods.

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.

What's the chemistry behind dyeing Easter eggs? Will adding vinegar to dye help the eggshell absorb the color? This colorful science project has the answers!

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.

Throughout history, people have used song as a teaching and memory tool. This project explores whether song improves a person's ability to retain information.

This science fair project idea identifies trees using a dichotomous key.

Your child will do a fun science experiment using soap and pepper flakes to help understand the concepts of water molecules and the surface tension of water.

Some fossils have been been preserved for billions of years! Help your kid understand how fossils are created and preserved with this crafty project.

Kids will love making sugar crystals in this sugar crystal science fair project which teaches important chemistry concepts like saturation and solubility.

Will potatoes spud or sprout faster in dry, dark, or cold conditions? Find out in this science fair project idea!

These science fair experiments demonstrate the chemistry of rust and the oxidation process.

This experiment will evaluate if chewing gum affects students' test performance.

In this project students experiment with making music using only glasses of water.

The garden is the perfect place to practice math and science with preschoolers. Get digging (and counting, sorting, observing at the same time!)

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