Science fair project that tests how well various sunscreens protect skin from the sunâs ultraviolet radiation by measuring their effect on sun-sensitive paper.

How clean is the air we breathe? The answer might surprise you. Learn how to investigate local air quality with this cool science fair project.

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

This science fair project idea tests whether tall people have the ability to swim faster than people of average and shorter heights.

In this project, different childproof containers are tested to see how childproof they really are.

Learn whether dark green and leafy veggies tend to have a higher Vitamin C content than lighter green varieties.

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.

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

Create a mini plant habitat with your kid to help teach him what it takes to make an ecosystem work.

The project examines absorbent polymers absorbency in disposable diapers and their unique ecological problem to the environment.

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.

This fun elementary school science fair project idea helps students in designing an amusement park using their knowledge of forces and simple machines.

The project investigates how friction affects motion by using different surface textures.

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

This science project challenges students to study the salt content in tap water and learn about electrochemistry.

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

Your kid will delight in creating an extraterrestrial vehicle from goods found around the house. There's no telling where her imagination will go!

This project investigates an interesting question: If one learns to write backwards, is one also able to read backwards?

This science fair project determines how age affects the speed that someone can change the focus of their eyes between near and far sightedness.

The objective of this science fair project is to experiment with balancing everyday objects and observing the the effects of gravity on materials.

This science fair project determines whether the types of plants growing in a Pacific Northwest rain forest environment are influenced by the soil acidity.

Using simple materials found around your home, you can reinforce the static electricity concept by helping your child build a simple device with zapping power!

This science fair project idea teaches kids the different functions of a leaf.

This science fair project idea explores edible things you didn't know you could eat.

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.

This science fair project will go beyond the simple definition of conservation to explore the different facets of what conservation means.

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

This science fair project idea investigates how optical distances change the apparent size of an object as seen through a magnifying lens.