This science fair project focuses on the use of the enzyme amylase found in human saliva to break down starch into sugar.

Do different types of oil mix or stack? Find out in this science fair project idea!

Slime: It's oozy, it's goopy, and it's just plain fun! Learn how to make slime with this fun science fair project.

Kids will love making sugar crystals in this sugar crystal science fair project which teaches important chemistry concepts like saturation and solubility.

Do you think you can blow down a sand castle with a mighty wind? Find out which material stands up best to erosion in this erosion experiment.

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.

Would it hurt to skip brushing your teeth just this once? Let's find out by seeing which foods produce the most mouth bacteria.

In this science fair project, students create their own miniature salt flats at home.

This project will explore whether test subjects, deprived of points of reference, will, in attempting to walk a straight course, walk in circles.

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

Kids will learn some cool stuff about chemical reactions by determining what happens when you mix different concentrations of hydrogen peroxide and yeast.

Examine the effect of pressure on carbonation in soda.

Is it a square or a circle? See if you can trick your friends with this zany science project!

Do hand soaps and sanitizers prevent the growth of bread mold? If so, why? Kids will find out with this fun and informative science fair project idea.

Did you even wonder why some rocks are round and smooth while others are broken up into small pieces?

In this hands-on design challenge your child will make their very own Rube Goldberg Machine.

Young physicists will wrestle with a discrepant event: the Hammer Ruler Trick. They'll make some inferences about torque, balance, and center of gravity.

4th graders construct an ocean food web to learn about consumers and trophic levels, food webs, and food chains in this cool ecology science fair project.

Find out whether we can create motion in a dish and as a result, create a wonderful and colorful show.

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

Set off an a science adventure as you prepare a row of bee homes for your new visitors.

Build a 3d animal cell model with this cool science fair project, which helps kids visualize and understand the function of a cell's parts and organelles.

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.

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

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.

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

In this activity, your child will be challenged to use simple materials to create a catapult for a small, lightweight toy.

Science fair project the demonstrates Newton's Third Law using a milk carton filled with water.

This biodiversity project examines the biodiversity in your own backyard.

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