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

This science fair project examines discover whether different formations of deodorant works better for certain skin types.

What can you do with hair after its cut? This science project teaches you practical uses for human hair.

Check out this fun science fair project idea to explore the process of diffusion in a cell and learn the difference between osmosis and diffusion.

Science fair project that determines whether tapping a pomegranate with a spoon helps it release its seeds.

Research camouflage products and techniques, test quality by timing volunteers. Calculate the average length of time to recognize the subject.

Free science fair project idea that examines the differences between cats and dogs. Analyze objective qualities rather than subjective ones.

Demonstrate how we are able to locate sounds, echolocation. Have a blindfolded subject locate you by the sound of your clapping.

Kids will learn some cool stuff about chemical reactions by determining what happens when you mix different concentrations of hydrogen peroxide and yeast.

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

Check out this cool science fair project idea on spectrum spinners and investigate how certain color combination can produce other colors.

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

Try this fun garden graphing project with your kindergartener this summer to give him a leg up in math and science while spending some valuable time outdoors!

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.

Free science fair project idea examining how different types of water affect plant germination and growth.

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

In this experiment, students create music with subliminal messaging to try to influence people's decision-making.

Blend art and science in this hands-on activity that shows your kindergartener how primary colors combine to make secondary colors.

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

Get a cool and easy science fair project idea which helps high school students in understanding concepts behind the working of a microphone.

This project is about after-images and what possibly affects them.

Check out this cool and free middle school science fair project idea on how to make a solar oven.

Is there a relationship between caffeine and heart rate? Students will determine the effect of caffeine on heart rate in this fun science fair project.

This science fair project idea investigates if fats add to the flavor of food.

How do crystals form? In this science fair project, students will use three different saturated solutions to see how different minerals form crystals over time.

This simple heat transfer experiment is a great introduction to the concepts of heat transfer and conduction.

The goal of this science fair project is to demonstrate current methods of detecting counterfeit money, in particular counterfeit detection pens.

This free science fair project explores the "dirty" relationship between the presence of organic material in soil and water absorbency.

Science fair project that examines oxidation, reduction and chemical indicators by testing for the presence of the iodide in salt.