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In this science fair project, we'll explore how blocking the sun's light can stop those can stop photosensitive paper from changing color.

This classic children's game demonstrates how sound travels through air vs. through a solid.

The purpose of this science fair project is to demonstrate how yeast, a fungus, causes bread to rise.

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

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

In this science fair project, apply the principles of leverage and force by building six simple machines designed to set weights in motion.

The objective of this science fair project is to examine the effects of temperature on salt and water solutions, as they form crystals over time.

Kids will learn about the interaction of lactose and lactase in milk and discover why we describe enzymes as catalysts in this fun science fair project.

Determine whether butterflies like to drink sugar water, salt water, or plain water.

This classic children's game-connecting two cups with a string-demonstrates sound's ability to travel through air vs through 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.

Learn how to make a ping pong ball anemometerâa device used to measure wind speedâin this free science fair project idea.

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

This light bulb science project includes step-by-step instructions for testing the heat from different light bulbs.

Construct and experiment with a periscope using reflected light rays to gather an image.

What's the chemistry behind dyeing Easter eggs? Will adding vinegar to dye help the eggshell absorb the color? This colorful science project has the answers!

Examine which metal conducts more heat by boiling water in 3 pans made of aluminum, copper, and stainless steel.

With this science fair idea, little scientists will gain valuable insights into the physics behind throwing a baseball.

The goal of this golf science fair science fair project is to determine whether the temperature of a golf ball affects its elasticity and its rebound.

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

Science fair project idea that examines different physical characteristics of a chosen animal. Make educated guesses about evolution based on animal's form.

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

How can we describe the relationship of magnetic field strength vs. distance? Kids will find out with this free science fair project idea.

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.

Cleaning can be a chore, but not with this sudsy experiment!

What's the science behind those out-of-sight roots? Find out if you can trick roots into growing in different directions.

This science fair project idea experiments with spinning color wheels and optical illusions.

In this experiment, your child will create two compost bins and see if he can determine what attracts fruit flies.

Kids will learn how to show the direction of magnetic field lines and create a permanent model using iron filings in this great science fair project idea.