This science fair project idea examines whether plants are still able to grow normally if they are turned upside-down.

What is it about a Slinky that causes it to walk down the steps? This simple experiment is a perfect illustration of both gravity and momentum.

Explore the craters, maria, and highlands on the surface of the Moon! In this fun science project you'll create a 3-D model of the moon using paper mache.

Take a dive into the candy jar with this yummy science experiment.

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

Every time a sound is produced it emits a sound wave. This experiment demonstrates how sound travels, using nothing more than a spoon and a string!

Does skin thickness really decrease fruit spoilage? Find out in this science fair project idea!

Discover whether cold or hot water from the faucet will boil faster on the stove.

Clouds are formed when warm and cold air meet. Here's a way for kids to see it all up close!

Crayons aren't just good for creating colorful masterpieces -- they're also great for science!

In this physics project, learn about the relationship between light intensity and distance using a laser pointer, flashlight, and graph paper!

Your third grader will be amazed at the explosive combination of vinegar and baking soda in these chocolate volcano cupcakes with white chocolate "lava."

Science fair project which uses coins flips to visually demonstrate the probability of an event and how to express it.

Kids will discover the meat science behind the meat they eat, and find out how to use safe chemistry to make meat more tender.

This science fair project idea discovers if an artificial light source will yield the same plant health and growth rates as light from the sun.

Science fair project idea examines validity of mood ring predictions. Analyze accuracy of results, consider the impact of temperature

Ant behavior is closely related to light intensity. This free science fair project idea examines how fast ants dig when they are exposed to to light and dark.

The goal of this science fair project is to discover the science behind carbonated soft drinks and apply this knowledge to create a new one.

This interdisciplinary card game will have your third grader working on math facts as he travels through the solar system!

The purpose of this science fair project is to build a basic radio.

Hone your child's skills of observation and take a look at forensic science for an interesting afternoon of exploration and detective work!

Use simple items to create a kindergarten "grow box" that lets a kid see just how salad plants send down their roots and grow underground.

Science fair project that determines whether landscaping fabric impacts the ability of plants to receive water.

Ever wondered how a plant drinks water? This science project will teach you how and help you create a beautiful floral display!

Chlorine and chloramine are added to our tap water to kill harmful microorganisms. What is the best way to filter these disinfectants in your drinking water?

Bring a little science to your third grader's Christmas as you test out his sense of smell by exposing him to common Christmas scents found in your kitchen.

This is a fantastic and easy science experiment where kids will learn about elasticity by testing how high bouncy balls of different materials can bounce.

This science fair project idea investigates the difference in reaction times between boys and girls.

Children combine an acid and an alkaline substance to simulate a volcano eruption in this fun experiment.

This science fair project teaches students about wilting and browning of salad greens.