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Teach your child some scientific basics as you explore the densities of various liquids in this fun experiment.

Science fair project about work and energy which uses a simple mathematical formula to predict how far a jar will roll down an incline.

Have your little astronaut create her own crater-filled moon with this fun craft project that encourages learning about the final frontier.

Make a lei and bring a touch of the tropical lifestyle into your home!

Science fair project that explains and demonstrates the parallax principle.

Demonstrate how static electricity can cause an object to move. It also examines just how an object affected by static electricity will move.

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

Take a nature walk in your backyard or local park to find one object for every letter of the alphabet. Then put them together in this handy nature book.

This science fair project idea experiments with spinning color wheels and optical illusions.

Science fair project which determines whether your current calorie intake will cause you to lose or gain weight over time.

Discover the force of water! This article provides step-by-step instructions for creating your own science experiment.

This free science fair project explores the "dirty" relationship between the presence of organic material in soil and water absorbency.

The objective of this science fair project is to analyze the effects of salinity and temperature on water.

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.

Have your child make a special mobile inspired by the weather outside. Learn about seasons, the environment, and art in 3D.

How do animals keep warm? In this experiment, find out whether fat insulation resists cold temperatures and learn how this works in the animal kingdom.

In this challenge, students are tasked with creating a car that can be powered by a balloon!

This science fair project determines the quality of a given product.

Have you ever seen fruit decay? Find out if a fruit will rot faster if you open it versus leaving it untouched!

Kids learn how to prevent erosion by growing grass. They'll test soil with grass against raw soil in this revealing science fair project idea for 4th grade.

This project examines whether humans can intuitively grasp numeric values greater than three.

This science fair project examines which fruits and/or vegetables will ripen prematurely when placed with ripe apples.

Do people only "hear" what they want to hear? Explore pareidolia and psychoacoustics with this easy science fair project that pits melody against white noise.

Here's a great activity that uses corks and toothpicks to create a fleet of floating boats. Which design makes for the most seaworthy vessel?

This science fair project idea discovers whether plants grow best in chemical fertilizer, organic fertilizer, or with no fertilizer at all.

Explore how dielectric heating comes into play when microwaving various liquids in this science project. This test will help you understand how microwaves work!

Give some of your local ladybugs a warm place to stay for the winter by making a ladybug home with recycled materials.

Help your kindergarten scientist predict and observe as she explores the science of smell...and have a great time doing it, too.

Why doesn't the ocean freeze? Students answer this question by simulating the chemical composition and temperature of arctic waters in their own home.

Science fair project that examines learn how the angle of incidence affects the efficiency of solar panels. How does a solar cell work?