Store bowls of fresh fruit in differently lighted environments. Contrast freshness based on appearance.

If your science savy third grader is up for a challenge, let her bend light with a casserole dish!

Determine the growth rates of different types of human hair. Ask volunteers to not cut their hair until the end of experiment. Measure hair length.

Encourage a group of third graders to play this fun game of Whistle Hide-and-Seek as a warm-up to get them prepared for finding a "lost" camper.

Would your child like to learn about a hidden world? All she needs to do is open her box of markers!

This science fair project idea researches the different layers of the atmosphere and creates a visual representation of the atmospheric layers.

Let your kid experiment with textures among fabric and other materials that are smooth, rough, soft, or slippery—and then they'll make a texture book!

Discover if soda geysers will erupt when using regular vs. diet cola and which candies will create eruptions.

Analytical chemists perform chromatography to separate colors into pigments. Test the food coloring used in M&M's and Skittles candy in this fun project!

Test your skills as a weather forecaster, and learn some science terms on the way!

Science fair project which determines whether plants are able to get enough nutrients from different types of garbage.

This science fair project idea shows kids how to grow mold and whether mold grows better in dry or moist conditions.

How does distance affect the spreading of light? Kids see diffraction and the inverse square law of light in action with this great science fair project idea.

Watch pre-packaged seeds and seeds taken from inside fruits and vegetables grow. Which ones will grow faster? Read more in this science fair project idea.

Determine whether butterflies like to drink sugar water, salt water, or plain water.

The apparent movement of the sun has been used to keep time since the bronze age. In this science fair project, kids plot solar time against mean solar time.

In this project, you'll build a model of the earth, complete with all seven continents and four major oceans.

Help your second grade scientist explore the timely topic of wind speed using a version of the classic Beaufort Scale.

Could there be toxic chemicals lurking in the cupboards and closets of your home?

Science fair project that examines the behavior of water and gravel in creek beds and the formation of sedimentary rocks.

Learn about magnifying glasses, concave lenses and inverted images by sending rays of light through a magnifying glass in this cool science fair project!

Show your fourth grader how to see her heart in action. Make a simple device out of a drinking straw and clay to help her spot the movement of her pulse!

Have your child build his own mini waterfall, and help him develop his planning, problem solving, and architectural skills.

Cleaning can be a chore, but not with this sudsy experiment!

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

What does yeast eat? Sugar, of course. But yeast also has some powerful enemies in the form of antifungal agents! Kids test them out in this fun yeast lab.

This science fair project idea explores which is better for diffusion and cell absorbing, more surface area, or more volume.

This science fair project studies whether DSLR and Point-and-Shoot cameras work the same way under all conditions.