In this activity, your child will be challenged to create a device that protects an egg when it is dropped from a height of about 10 feet.

Learn how to make an anemometer with step-by-step instructions in this cool science fair project idea for 4th grade.

How sensitive is your skin? Here's a fourth grade science experiment that lets your child figure it out.

Learn about lateral earthquake motion and its effect on high rise buildings in this simple 4th grade earth science experiment.

This 4th of July, explore fourth grade science and make some safe fireworks in your own backyard using soda pop!

Let your fourth grade chef mix up butter and sugar with scientific principles about different states of matter, and get delicious toffee, too.

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

Kids explore how a single movable pulley can confer a mechanical advantage over a fixed pulley in this cool engineering science fair project for 2nd grade.

Here's a fourth grade science craft with lots of benefits: it's good for birds, good for your child's learning, and good for the planet, too.

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.

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

Find out whether packaged seeds actually do expire in this new science fair project idea.

This science fair project teaches kids experimental design and how to test if subjects can really sense if they are being watched.

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

Find out whether putting something on top of a plant will inhibit its growth.

How well can people recall what they have observed. Test your knowledge in this fun experiment.

This science fair project idea examines liquids of different densities.

The objective of this science fair project idea is to determine if sound travels best through the air, water or a solid.

This science fair project idea investigates how color affects temperature.

How do organic materials become soil? This science experiment measures what materials biodegrade.

Watch pre-packaged seeds and seeds taken from inside fruits and vegetables grow. Which ones will grow faster? Read more in this science fair project idea.

This science project idea examines the effect of microwaving on various objects.

The purpose of this science fair project is to study the properties of sugar and examine individual preferences for sugar and other sweeteners.

Examine whether distilled water, spring water, or regular tap water yield faster plant growth.

This science fair project idea investigates if fats add to the flavor of food.

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

Help your fifth grader execute this experiment involving a lit candle (submerged in water!) to show him the wonders of heat energy transference.

This science fair project idea explores substances that cause a bubble to last longer.

Excite your fourth grader by recreating ancient Viking myths. This miniature longboat will explore the principle of water molecules expanding when heated.