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Test out the pH levels of soil in your backyard versus soil in more wild environments to solve this science case.

Kids learn how to manipulate additive and subtractive colors to send secret messages with red colored filters in this cool science fair project idea.

Check out this fun and easy 4th grade science fair project idea that tests how gravity induces positive and negative geotropism (gravitropism) in bean plants.

In this project, build an insect model that shows how the head, thorax, and abdomen fit together! Learn insect anatomy by constructing a paper mache critter.

What is a series circuit and how does it work? Learn about voltage, electrical current, and resistors in this cool science experiment!

This Mother's Day, mix in some fifth grade science learning to create this fabulous fudge!

In this cool psychology experiment, study how companies air commercials to strategically advertise to viewers who will buy their products.

You don't need to head to the Arctic to experiment with life in an igloo. Learners can build their own ice igloo at home from water and empty milk containers.

Observe how your brain works while it is focused on one thing, and how it works while you are distracted by another thing.

Compare the whitening abilities of four different brands of whitening toothpaste to see which one whitens the fastest and which one whitens the most.

Compare the amount of ozone in various locations with this science fair project that will have your kid create her own ozone strips!

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

Science fair project that identifies the differences between soils from different environments and attempts to figure out why those differences exist.

How do mirrors work? What is light, and how does it travel? Explore light and reflection with your preschooler with these simple hands-on experiments.

Have you ever wondered how many numbers most people can memorize? Test your friends to find out!

It's easy to plant your own in-home container garden! This planter contains pizza-themed herbs and is a perfect early gardening activity for kindergarteners.

Science fair project that determines how UV radiation emitted by the sun varies depending on the time of day, using a handheld UV detector

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

Deck the halls with last season's Christmas lights for a spectacular and electrifying science activity.

Kids will build a turtle habitat in order to observe the climate preferences of this cold-blooded reptile.

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

Here's a science experiment that gives your kids a chance to see how fire needs oxygen to burn, with a little math and writing practice thrown in.

Delight your budding scientist with this cool physics magic trick and teach her some basic physics concepts while you're at it!

This science fair project examines how seeds hitchhike on animals and clothing.

Create a brush pile to help wintering wildlife stay warm and cozy through the winter.

In this science fair project, kids measure how weather conditions affect how fast a puddle evaporates.

Help your young scientist celebrate the wonders of the night sky in the comfort of your own home.

In this experiment, your middle schooler will chart the effects of oil on a feather in order to grasp the tragic effects of oil spills on wildlife.

This experiment explores whether caffeine improves athletic performance.

Does your middle school teenager have good reflexes? Gauge his reaction time in this science and math activity that requires only a yardstick and a friend.