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Why does honey crystallize? This science fair project project answers this question and identifies the variable that makes this sweet solute crystallize faster.

Watch pre-packaged seeds and seeds taken from inside fruits and vegetables grow. Which ones will grow faster? Read more in this science fair project idea.

Get this cool science fair idea to explore how arctic tundra animals change their behavior and adapt to survive in long, cold winters.

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

This science fair project idea investigates how the height at which a pendulum is released affects the length of time it continues.

Examine the effect of pressure on carbonation in soda.

This science fair project idea explores whether talking to a plant will help it grow.

What do ants eat? Kids find out by observing a colony of ants in this cool zoology science fair project for 4th grade.

This science fair project on testing water hardness is a great introduction to practical chemistry. Test and learn the difference between hard and soft water.

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.

Are your taste buds up for the challenge? Put tongues to the test with this science fair project that examines who enjoys sour flavors more, adults or kids?

Examine whether distilled water, spring water, or regular tap water yield faster plant growth.

In this pinto bean germination experiment, you'll learn about how fertilizer aids in growing pinto beans into seedlings.

This science fair project idea investigates the ability of different whitening toothpastes to whiten teeth.

This science fair project idea builds models of various types of bridges and then determines which bridge design is the strongest.

This science fair project idea determines if the temperature of rubber effects how high it bounces.

Use chemical analysis to identify a variety of mystery powders that look the same but actually have very different properties.

The goal of this science fair project is to demonstrate different ways to generate static electricity and record its effects.

Determine whether butterflies like to drink sugar water, salt water, or plain water.

Ant behavior is closely related to light intensity. This free science fair project idea examines how fast ants dig when they are exposed to to light and dark.

In this science fair project, we'll explore how blocking the sun's light can stop those can stop photosensitive paper from changing color.

This science fair project idea investigates how the shape of an object affects drag.

Want to see a great example of Newton's first law? Kids will learn about basic physics with this fun, ballistic experiment.

The goal of this project is to create an exciting topographical map out of dough.

What's the best way to make DIY compost? Kids will learn about aerobic and anaerobic decomposition while learning to appreciate the value of composting.

This science fair project explains the process of how the lungs expand and contract with the help of the diaphragm.

Science fair project that examines how to grow bacteria in a controlled setting, using simple materials from around the home.

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 which objects float and sink in honey, water, and oil.

Science fair project which determines whether plants are able to get enough nutrients from different types of garbage.