This engaging project encourages young children to practice and refine the important scientific skills of sorting and classification.

In this science fair project, young children discover what happens when two fluids that have different densities get together.

Young scientists will investigate people's preferences for saltiness, and make some inferences about genetics and diet.

This science project teaches young students about germs, bacteria, and the importance of washing their hands. Students will test what is the best way to wash.

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

What causes dilated pupils? Young scientists will find out by applying what they already know about changes in pupil size and making models of the pupil.

In this experiment, young ecologists will learn about a type of edge effect: how trees and plants at the edge of a forest can act as a weed filter.

Magnets vary in strength. Have your young scientist figure out which kind of magnet is the strongest when you have him conduct this attractive experiment.

Can a toy car determine the strength of a magnet? In this cool magnet science fair project, young scientists will learn how to measure the strength of a magnet.

Stories change as you retell them. The objective of this science fair project is to demonstrate how information gets interpreted, distorted and changed.

This science project encourages students to investigate the Mozart Effect, the idea that classical music promotes learning.

This science project allows students to study the psychology of happiness.

Do lefties just write different or are their brains different? This science project has students explore what it means to be left handed.

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

This science project has students study a group of volunteer liars actively lying to study the behavior of a lie. Students see if they can figure out the truth.

This science fair project idea teaches that time always passes at the same rate and nothing we do in our daily life âreallyâ affects how fast it moves.

This project is a vivid, concrete introduction to the basic but important idea that plants need sunlight and water to grow.

This project determines what category of person is most likely to be ticklish.

This science fair project compares the allelopathic affects of juglone, a chemical agent produced by the Black Walnut tree, on two plants.

In this project children discover, identify, and sort seeds from a variety of fruits and vegetables

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 objective this science fair project is to determine whether a bigger bag will allow a homemade hot air balloon to fly higher than smaller bag.

Here's an easy experiment that lets your first grader practice the scientific method, while watching a caterpillar eat.

This science fair project idea determines if crystals will absorb food dye and if colors will mix by the process of diffusion.