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

This project examines what types of objects burn and which burn faster and cleaner.

This cool and easy elementary school science fair project idea provides the basic information on the use of our senses to experience the world about us.

In this science fair project you will make a model of a cell membrane using very simple material.

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!

Believe it or not, the common spud has enough electrochemical energy to power a small digital clock.

This activity challenges your student to use spatial reasoning and computational thinking to program multiple robots.

An hour glass, also known as a sand clock, keeps time. In this activity, your child will make her own sand clock and measure the time it keeps.

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.

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

Science fair project in which you will attempt to throw a ball the greatest horizontal distance possible by using different angles.

This science fair project idea explores whether cats can be trained in the same way that dogs can.

Children will learn why and how to compost as they help with the process of filling their compost, turning it, and observing the changes that occur.

Think you can blow up a balloon without using your mouth? This isn't just a cool trick, it's also a great way to introduce chemistry and biology concepts.

This science project explores the concept of being opaque or clear. Can you make something clear opaque? Or something opaque clear?

The objective of this science fair project is to explore the relationship between acidic and basic compounds.

Your child can use leaves and grass to create his own outdoor art in celebration of Earth Day...all he needs are is the great outdoors and some creativity!

In this awesome science fair project idea, kids will be attempting to pick up different objects using snail slime.

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

By incorporating natural materials and the powers of observation, your child will become a backyard naturalist while building early writing and drawing skills!