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Find out the differences (if any) in the frequencies of voices produced from a computer, from a phone, and directly coming out of the voice box of a human.

Cinnamon is tasty, but does it have super powers as well? Find out if cinnamon can repel mosquitoes in this outdoorsy experiment.

Science fair project which examines the relationship between frequency of spider web vibration and spider's response time.

Science fair project the demonstrates Newton's Third Law using a milk carton filled with water.

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

This science fair project idea determines if the size of the parachute will change the rate at which an object falls.

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

What is topography? Kids find out by learning to make and read a topographic map in this awesome science fair project idea.

Learn how to demagnetize a magnet and how physics can explain this phenomenon with this enlightening science fair project.

Dig into the physics of pool to explore some cool applied math and learn about what happens in an elastic collision of equal masses.

Get a cool middle school chemistry project idea on how to determine whether a physical or a chemical change has taken place.

Construct batteries that make electricity from fruits with this fun science fair project.

This science fair project idea explores whether a person's ability to see under very dim lighting conditions diminishes with age.

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.

Find out whether matching resonant frequencies can cause objects to shatter.

Science fair project which uses a camera to observe the surface of a balloon in the moment of its explosion.

Crayons aren't just good for creating colorful masterpieces -- they're also great for science!

Learn about how sugar fermentation and growing yeast in this easy science project! Yeast is a eukaryotic microbe that puts the fun in fungus!

Learn about where colors come from and how light absorption works in this fun experiment! All you need is a flashlight, construction paper, and cellophane!

In this science fair experiment, students learn about the scientific principles behind Doppler ultrasound.

In this science fair project, students examine under what conditions individual plants release seeds and how far the seeds are released.

In this project students determine which instruments composers use to create birdsongs and birdcalls in classical music.

This project explores how and how much one family can reduce the amount of garbage they accumulate over a three month period.

Study history of aerodynamics of arrow design to create a perfect arrow. Test arrows by shooting at an archery target.

Build basic projector out of ordinary materials. Create several color transparency slides, demonstrate your creation.

This experiment will explore whether adding different substances to a gel affects its strength.

Research hemispheric brain dominance in order to determine if you have a dominant side. Test foot, ear dominance. Record observations.

What is the best stain remover for clothes? In this fun and easy science fair project idea, students will identify the best method for laundry stain removal.

What is persistence of vision? With this hands-on science fair project idea, students will demonstrate this cool and dramatic phenomenon in their own classroom.

Explore joule heating and resistance vs. temperature with this cool electricity science fair project that gets kids melting ice cubes with resistors.