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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.

Check out this fun science fair project idea to learn how alkaline batteries convert chemical energy to electrical energy?

Will your liquid weigh less once you remove the fat from it? Find out in this science fair project idea.

Will people perceive your intelligence differently depending on your hair color? Find out in this science fair project idea!

In this fun design challenge, your child will get creative with making structures out of toothpicks and gumdrop candies.

Did you ever drink spoiled milk? Find out whether whole milk spoils at the same rate as 2% and skim milk.

The objective of this science fair project idea is to find out whether refrigerating cosmetics will extend their shelf-life and longevity.

Find out whether soil amendments can improve soil conditions and help you grow a bigger beanstalk in this ecology experiment!

What's the difference between centripetal and centrifugal force? Students find out by seeing both in action as they conduct this experiment.

What is a compound microscope? Kids find out by making one of their own in this cool science fair project.

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

Check out this cool science fair project idea to explore non-chemical means of preserving fruits by using thermotherapy.

Milk is made of water and fat; but how can you separate the two? Find out in this color changing milk experiment.

In this activity, children will work on their mathematics and engineering skills as they attempt to recreate the Eiffel Tower out of building blocks!

Can you win a staring contest? Would your performance be influenced by your eyesight? Find out in this science fair project idea!

Have fun with bubbles and find out why there are bubbles in your tap water in this cool science fair project idea.

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

Check out this fun leaf chromatography science fair project idea for middle school students and discover the hidden pigments in leaves.

Can you wink? Is your ability to wink genetic or simply based on chance? Find out in this science fair project idea!

In this science fair project, we'll use a liquid crystal thermometer to find out whether exercising makes a difference in people's temperature.

Science fair project that identifies the differences between soils from different environments and attempts to figure out why those differences exist.

Check out this cool middle school science fair project idea to determine if shopping carts are really carriers of harmful bacteria.

Check out this fun science fair project idea to learn about seismic waves and how fast they travel during an earthquake.

Does 100% Fruit Juice have more Vitamin C than juice with artificial ingredients? Find out in this science fair project idea!

Create a double-slit interference out of cardboard. Produce an interference pattern that demonstrates the wave and particle characteristics of light.

Magnets may hold up papers on the fridge, but is it the paper that attracts them? Find out more with this kindergarten science investigation.