The objective of this science fair project idea is to examine light refraction as it passes through liquid crystals.

This light bulb science project includes step-by-step instructions for testing the heat from different light bulbs.

How does a compass work? What's a magnetic field? Kids will build their own compass at home to find the answers in this great science fair project idea.

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.

This easy at-home experiment is a great way to "see" science.

What do ants eat? Kids find out by observing a colony of ants in this cool zoology science fair project for 4th grade.

This activity will introduce your child to the four different components of blood and give him a fun way to visualize its properties.

This basketball project explores the best way to make the perfect shot every time.

Do plants breathe? Not exactly. They do respire though! This activity will help your child with see that plants are producing the oxygen we need to survive.

Did you know your body is full of simple machines? This project looks at one of the third-class levers in the human body: your arm!

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

Show your fourth grader how to see her heart in action. Make a simple device out of a drinking straw and clay to help her spot the movement of her pulse!

In this activity, your child will be challenged to make a tower using paper cups.

This science fair project idea creates a sedimentary rock and to investigate what takes place during the rock cycle.

This experiment uses a yeast solution, liquid detergent, and hydrogen peroxide to produce an exciting reaction like no other!

This project examines whether people's taste perception is influenced by what they see.

Want to make Halloween truly eerie? Science to the rescue! These ghouly hands come alive with a little help from simple chemistry.

In this cool project, create a lighted, scale model of the different layers of the Sun, including the core, radiation and convection zones, and photosphere.

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

This simple "how to make a water wheel" activity makes physics come alive for your child by demonstrating how different kinds of energy work.

The purpose of this science fair project is to explore whether UV light passes through some colors and not others by looking at blue, red, purple, and clear.

This kinesthetic learning activity will help your fourth grader get a firm grasp on the immensity of the solar system.

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

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

Your child helps the environment while saving your family money in this fun and rewarding "Gas Guzzlers" competition.

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