What's the relationship between temperature, air humidity and static electricity? Kids will find out with this free static electricity science fair project.

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

This science fair project idea builds models of various types of bridges and then determines which bridge design is the strongest.

Why does honey crystallize? This science fair project project answers this question and identifies the variable that makes this sweet solute crystallize faster.

This science fair project idea creates a sedimentary rock and to investigate what takes place during the rock cycle.

In this science experiment, do tensile strength test on fishing line, a strand of hair, a rubber band, and any other materials you're curious about!

Kids are sure to be entranced by the magic of the ocean when they create their very own ocean in a bottle.

This science fair project idea determines if the color of light affects the growth of plants.

Do earthworms like moisture or darkness? Find out as we explore the relationship between earthworms and light.

Here's a first grade ladybug game that explores how air can move solid objects, and adds some measurement practice, too. Play, learn, and enjoy!

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 construct a single fixed pulley system to learn how pulleys can make work easier in this cool physics and engineering science fair project idea.

This science project challenges students to learn about and classify weeds and discover new practical uses for weeds.

Introduce your child to the importance of preserving the world's biodiversity by turning a lesson on endangered species into a fun game for the whole family.

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.

In this experiment you will replicate the mummification process by making a hot dog mummy.

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

Learning about how plants grow is a building block in the early grades science curriculum. Put a fun twist on this life science concept with these cup monster friends!

This recipe makes bubbles that not only blow up nice and big, but do tricks and experiments! How do you do it? It's not a secret, it's science!

Learn whether Mylar Balloons last longer than Latex Balloons or vice versa.

Check out this fun and easy science fair project idea on germination of a seed and learn to identify exterior and interior parts of a bean seed.

In this air pressure science experiment with a balloon and a jar, children will use heat to create a partial vacuum and suck a balloon into a jar.

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.

In this activity, your child will make her own "quicksand" to better understand how a substance can be both fluid and solid at the same time.

Kids will make a beautiful rainbow in a jar and learn what enables different types of liquids to remain distinct in separate layers.

This is a quick, easy science fair project that conveys the idea of density to preschool and early elementary children.

Challenge your young dinosaur lover to examine dinosaur footprints and then create their own dinosaur fossil in this hands-on activity.

This science fair project teaches about mold. Students will test different foods to see which grow mold the fastest.

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.

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