Test your friends to find out if you can replicate the placebo effect's incredible results.

Experiment with buoyancy to learn how a submarine rises and sinks in this classic science experiment.

Did you know a mouse eats almost fifty times as much as a cow? Find out how and test out the strange science with your friends!

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

Check out this cool science fair project idea that models the behavior of the cold desert plants: xerophytes and halophytes.

This science fair project idea explores whether there is a connection to the color a person wears and the way their emotional state is perceived by others.

In this science fair project, you'll make a "ghost" appear in a test tube, and learn about what happens when hot water and cold water interact.

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?

Have your child kick off their summer vacation by making a miniature water slide!

The purpose of this science fair project is to determine which conditions and materials quicken the composting process to make the best compost.

Use pepper and soap to discover some fun facts about the properties of water.

Learn how to make a ping pong ball anemometerâa device used to measure wind speedâin this free science fair project idea.

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

Kids will learn about insulation, heat conduction, and the economic benefits of energy efficient windows in this cool science fair project.

In this exciting and empowering challenge, your child will construct a bridge using marshmallows and toothpicks!

The project determines determine if a sports drink affects the heart rate of a student athlete during exercise.

This science fair project idea determines the operating differences of AAA, AA, C, D batteries all with a 1.5 volt rating.

What are the benefits of good posture? Kids will learn about the cognitive effects of good posture through conducting and observing a controlled experiment.

In this project children discover, identify, and sort seeds from a variety of fruits and vegetables

Find out whether soil amendments can improve soil conditions and help you grow a bigger beanstalk in this ecology experiment!

Can you increase the light and plant growth in your garden using mirrors? In this experiment, measure light reflection and find out!

Soil is made up of different layers. How far down do you need to dig to find the soil horizon, or the place where bits of leaves and branches become soil?

Kids will learn how to make a thermometer to to explore liquid density in this great science fair project. Which liquids are affected by temperature the most?

The science project fair idea explores the interaction between your nose, mouth, and brain when tasting a new food or drink.

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

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

This science project encourages students to investigate the Mozart Effect, the idea that classical music promotes learning.

In this activity, students will create a stop motion animation by creating a clay figure and taking a series of digital photographs.

Is it amplitude? Weight? Length of string? Kids will discover what factors changing the period of a pendulum depends on in this fun and easy physics experiment.