This science fair project idea explores what common compounds can be easily separated out in a centrifuge.

Test out the pH levels of soil in your backyard versus soil in more wild environments to solve this science case.

Test your friends to find out if you can replicate the placebo effect's incredible results.

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

What keeps a an item cooler, polymer crystals or ice? Find out in this cool science experiment!

In this science fair projects, students will grow out the bacteria that collect on air conditioner filters.

Find out whether packaged seeds actually do expire in this new science fair project idea.

Do earthworms like moisture or darkness? Find out as we explore the relationship between earthworms and light.

Are you ready to be a detective for science? Then get out your magnifying glass and start studying fingerprints!

Do males really prefer listening to male than female singers? Find out when exploring this science fair project!

Time to look at our faces! Are they symmetrical or asymmetrical? Find out in this 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.

Have you ever wondered how many numbers most people can memorize? Test your friends to find out!

Enter the buzz worthy world of bee watching and find out what time bees like to wake up!

Figure out which fruit has the most vitamin C (ascorbic acid) in this fun science project!

Find out whether cast iron or regular teflon pans heat up faster and also retain their heat longer.

The objective of this experiment is to find out if cooked beans grow faster, if at all, than uncooked beans.

Will potatoes spud or sprout faster in dry, dark, or cold conditions? Find out in this science fair project idea!

How would you dry your wet clothes if your dryer didn't work? Find out with this fun experiment!

Are you able to endure long periods of exercise? Find out if snorers can exercise longer than non-snorers.

Find out whether freezing or refrigerating destroys more bacteria. This is essential to consuming safe and germ-free food.

Check out this cool science project idea to explore how temperature creates annual rhythms that govern plant growth.

Kids conduct a simple birdseed experiment to figure out what kinds of birds live nearby in this fun science activity.

Will storing cucumbers and tomatoes in the fridge destroy their unique flavors? Find out in this science fair project idea!

Does skin thickness really decrease fruit spoilage? Find out in this science fair project idea!

In this science fair project, learn how to make gears and find out why they transmit torques in predictable ways.

In this activity, your learner will be challenged to create their own tic-tac-toe grid out of building blocks.

What is a wedge? Kids find out by experimenting with different wedges in this simple science fair project idea.

How does salinity affect the point at which water freezes? Kids will find out by performing this cool melting ice experiment.

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