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This science fair project idea investigates the ability of different whitening toothpastes to whiten teeth.

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

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

Combine your child's natural curiosity with his developing classification and writing skills by helping him create a backyard field guide.

In this fun project, use a memory game to test various age groups and determine whether aging directly affects short-term memory loss.

Students will investigate the thermal conductivity of metals by learning how to measure thermal conductivity with this fun and easy science fair project idea.

Discover how to make fake snot with this cool science fair project idea to learn about polymers, enzymes, and more.

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

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

Find out whether a longer airplane will fly farther or a wider paper airplane.

For a fun family activity to introduce your child to genetics, have your child go on a search for dominant and recessive family genes!

This science fair project idea explores how the shape of a boat affects its density and how much weight it can float.

This science fair project teaches you about what makes persimmons so tart and how astringency can be removed by studying the effect of tannins on fruit.

Are you ready to be a detective for science? Then get out your magnifying glass and start studying fingerprints!

How do series and parallel circuits work, and which produces the brightest light in a light bulb? Construct both in this project and find out!

This fun science fair project idea helps students learn how acid rains are formed and explore how acid rain damages the environment.

This biodiversity project examines the biodiversity in your own backyard.

The goal of this science fair experiment is to demonstrate the effects of air pressure on objects and analyze applications of air pressure principles.

What's the relationship between temperature, air humidity and static electricity? Kids will find out with this free static electricity science fair project.

In this science fair project, learn how a mineral streak is made and how it can help identify an unknown mineral.

The objective of this science fair project idea is to examine light refraction as it passes through liquid crystals.

This science fair project idea determines the probability of a coin landing heads or tails.

What cause the phases of the moon? Make a model to see how the positions of the Sun, Moon, and Earth cause the crescent, gibbous, quarter, full, and new moon.

This science experiment tests why guacamole goes brown and if leaving the pit in will stop guacamole from turning brown.

Kids learn how to manipulate additive and subtractive colors to send secret messages with red colored filters in this cool science fair project idea.

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

This educated-guessing game is great for preschoolers. This activity helps your child work on her reasoning skills.

Does the temperature of a magnet affect its strength? Learn about the relationship between magnets and temperature with this cool physics science fair project.

The purpose of this science fair project is to explore whether UV light passes through some colors and not others by looking at blue, red, purple, and clear.

This science fair project idea determines what household items are good conductors of electricity.