In this cool physics experiment, use double plane mirrors at various angles to learn about light reflection. Then, see if you can solve a puzzling problem!

The Galileo inclined plane physics experiment was one of the first ways scientists calculated acceleration due to gravity. Do it yourself in this project!

Learn about the field of psychophysics and to learn about "Just Noticeable Differences."

Do you love to make Jell-O? Find out in this science fair project idea if it is possible to make Jell-O with just warm water.

In this wind tunnel experiment, you'll make a wind tunnel to test lift and airflow on a model plane and explore aerodynamics and the Bernoulli Principle.

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

Test whether cutting up meats will make it cook faster than just cooking it whole.

Discover whether people can distinguish what a person looks like just by listening to their voice.

Word color association is just a fancy way to talk about the way we connect colors with words.

Dive into the world of cooking oil and smoke points to discover just how fast some oils start smoking.

Do suds equal more clean or does a sud-free cleaning agent works just as well or even better?

Discover whether cheap saline solution bottle cleans and disinfects just as well as more expensive kinds formulated with different ingredients.

Slime: It's oozy, it's goopy, and it's just plain fun! Learn how to make slime with this fun science fair project.

Ever wonder why refrigerator lights turn off when you close the door? Does the darkness prevent food from spoiling? This experiment, determines just that.

Have you ever noticed the ridges on a dog's nose? In this project, we take several dogs' nose prints and discover just how unique they are!

Demonstrate how static electricity can cause an object to move. It also examines just how an object affected by static electricity will move.

Tired of gum with flavor that lasts for just a couple of minute? Put gum to the test with this chewy science experiment!

This science fair project idea examines which is the best way to get rid of water stains (stains caused by just water) on fabric.

Science fair project which determines if plants really do need water to grow, or whether they just need to be kept wet.

In this project, create and examine garden mulch to find out what critters live in the messy, muddy layers just above the soil.

Get ready for a yummy taste test! Just pour the milk -- and make sure you have some chocolate chip cookies on hand.

Would it hurt to skip brushing your teeth just this once? Let's find out by seeing which foods produce the most mouth bacteria.

If you hold a fire up to a balloon, it pops instantly. What if you could prevent this from happening? In this project, we do just that.

Is the birthday paradox really a paradox, or just an intriguing problem that defies intuition? Find out with this birthday paradox science fair project.

Do lefties just write different or are their brains different? This science project has students explore what it means to be left handed.

Why does purple cheese look nasty? Because color plays a big part in how we perceive the taste of different foods. Are birds just like us in this respect?

While your cells are much too small to see without a microscope, you can create the look of a cell in your very own home with just an egg and vinegar!

Are you ready to pilot your own airplane? Well, then take to the skies with this high-flying project!

Science fair project that determines how your mirror image differs from your actual image and how virtual images are constructed.

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