In this science fair project, learn how to make gears and find out why they transmit torques in predictable ways.

Do suds equal more clean or does a sud-free cleaning agent works just as well or even better?

Find out whether freezing or refrigerating destroys more bacteria. This is essential to consuming safe and germ-free food.

The purpose of this science fair project is to investigate whether cooking seeds before planting will speed up germination and growth.

How does rust form? Kids will learn about the roles oxygen, water, and electrons play in rust chemistry in this cool science fair project idea.

Do you love to make Jell-O? Find out in this science fair project idea if it is possible to make Jell-O with just warm water.

Cinnamon is tasty, but does it have super powers as well? Find out if cinnamon can repel mosquitoes in this outdoorsy experiment.

The purpose of this science fair project is to demonstrate how yeast, a fungus, causes bread to rise.

Compare different remedies for cooling the mouth after eating spicy food.

In this science fair projects, students will grow out the bacteria that collect on air conditioner filters.

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.

Word color association is just a fancy way to talk about the way we connect colors with words.

The goal of this science fair project is to evaluate the effect of heat on sound wave frequency.

Use chemical analysis to identify a variety of mystery powders that look the same but actually have very different properties.

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

Science fair project which determines whether the size or the thickness of a piece of paper has an effect on how many times it can be folded in half.

Create your own light bulb and test filaments of different thicknesses to see which keeps the bulb burning for the longest time.

Learn about the field of psychophysics and to learn about "Just Noticeable Differences."

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

Science fair project that explores the phenomenon of Non-Newtonian fluids by exerting force on different materials.

The goal of this science fair project is to demonstrate the effects of oxidation by writing a message in invisible ink made from lemon juice.

This science project involves comparing the relative effectiveness of salt, pepper and dehydration in food preservation.

Help your middle schooler improve his observation skills by playing this simple observation and spatial memorization game.

Find out which type of sponge holds the most water.

What does a raindrop look like when it splashes on the ground? Is each raindrop unique like snowflakes? Find out how raindrop size varies in this experiment.

Investigate which substances are most effective at removing salt from water.

Do hand soaps and sanitizers prevent the growth of bread mold? If so, why? Kids will find out with this fun and informative science fair project idea.

Science fair project that compares the biodiversity of fungi in different ecosystems by identifying species of fungi.

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.