This science fair project idea teaches about the size of two different systems: the solar system and an atomic system.

Learn about this simple machine and make a pulley of your own to use for fun science trials.

In this fun science experiment, kids will determine the best method for ripening avocados and discover the cool chemical reaction that makes this possible.

How good are humans at sound localization? Kids can try this cool science fair project idea to see how good their friends are at judging sound direction.

Word color association is just a fancy way to talk about the way we connect colors with words.

This science fair idea is a great way for kids to explore static electricity. Kids will give a comb a static charge and watch as it separates pepper from salt.

Looking for a project on machines? Get a fun elementary school science fair project idea to design a compound machine using your knowledge of simple machines.

This project compares different liquids and the freezing, melting and boiling points of liquids.

In this experiment you simulate radioactive decay in order to gain an understanding of the basics of half-life.

This experiment will explore if magnetism has any effect on the regeneration abilities of flatworms.

These science fair experiments demonstrate the chemistry of rust and the oxidation process.

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.

The objective of this science fair project is to observe the properties of friction and apply this knowledge to search for a near-frictionless surface.

Kids build a desert food chain, desert food web, and desert food pyramid in this cool science fair project to learn about trophic levels and consumers.

Learn about our response to scents that existed in our environment over evolutionary time and consider why scents might affect our mood state.

introduction to organic chemistry. study what happens when polymer molecules are mixed with borax solution.

Why does honey crystallize? This science fair project project answers this question and identifies the variable that makes this sweet solute crystallize faster.

In this science fair project, students focus sunlight with a magnifying glass and trap shorter waves to melt ice.

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

Did you know a mouse eats almost fifty times as much as a cow? Find out how and test out the strange science with your friends!

This science fair project idea investigates how the shape of an object affects drag.

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

This science fair project idea investigates the relationship between memory and age.

This experiment will explore if a randomly iterated algorithm will result in a pattern.

In this free science fair project, learn how to separate salt from water using heat. A great science project for elementary school kids.

This project determines whether hands-on practice, mental practice, or no practice leads to better shooting of free-throws.

This project examines the concentration of dissolved oxygen in water, with and without oil.

This science fair project idea studies which brand of wintergreen candy produces the most sparks in the dark.