This science fair project idea explores how length affects the weight a bridge can hold.

The goal of this golf science fair science fair project is to determine whether the temperature of a golf ball affects its elasticity and its rebound.

In this plastic wrap science fair project, you'll learn about polymer permeability and find out which plastic wrap keeps food from dehydrating best.

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

Inspire your child to put on her engineer hat for the day, as she builds her very own, double-decker bridge.

Can a toy car determine the strength of a magnet? In this cool magnet science fair project, young scientists will learn how to measure the strength of a magnet.

What causes sound? Here's a simple science experiment that adds a visual element to the science of sound to help kids better understand this tricky concept.

This recipe makes bubbles that not only blow up nice and big, but do tricks and experiments! How do you do it? It's not a secret, it's science!

What's a liquid? What's a solid? What better way to experiment than by turning a childhood favorite, ice cream, into a homemade science lesson!

This easy and inexpensive paper towel science project introduces kids to important physical concepts like cohesion, adhesion, and capillarity.

This science exploration lets your first grader see how eggs can provide a perfect environment for a living, growing creature.

Magic, science, or household cleanser? Let your second grader decide with this practical, nontoxic chemistry experiment with acids and bases.

Explore aromas with your child and help boost her brain power with some fun and interactive science activities.

This science activity will help your student explore the changes that occur to transform an egg from raw to soft to hard-boiled.

Help your child understand the scientific concept of evaporation with this fun outdoor science activity.

Observe with your third grader what happens when food starts to decompose, and boost science skills simultaneously with this experiment!

This science fair project teaches students the differences between fruits and vegetables.

Put your second grade scientist to work this Fourth of July with our colorful "liquid fireworks" project!

Your kid will be captivated as she watches liquids change color before her very eyes during this fun science project that introduces some chemistry basics.

Wool can absorb 1/3 of its weight in water, while still keeping the body warm. She can test this theory by performing a scientific sock comparison!

This science fair project idea investigates how color affects temperature.

This science fair project idea explores the egg's thin membrane.

This science fair project idea demonstrates that plants give off water.

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

This science fair project idea investigates the hardness property of minerals.

These science fair experiments demonstrate the chemistry of rust and the oxidation process.

This science fair project idea examines the reason boats are shaped and engineered.

This science fair project idea compares biodiversity between drops of water.

In this air pressure science experiment with a balloon and a jar, children will use heat to create a partial vacuum and suck a balloon into a jar.

In this free science fair project, learn how to separate salt from water using heat. A great science project for elementary school kids.