Is it a square or a circle? See if you can trick your friends with this zany science project!

By incorporating natural materials and the powers of observation, your child will become a backyard naturalist while building early writing and drawing skills!

How does a kazoo, the strings of a guitar, or the speaker of a radio make sound? The purpose of this science fair project is to show how vibration makes sound.

The purpose of this science fair project is to explore whether UV light passes through some colors and not others by looking at blue, red, purple, and clear.

This science fair project idea demonstrates how air resistance contributes to denser objects falling faster than less dense objects.

It's rhyme time! With this science fair project idea, your child will find out which words can be considered easy rhyming words, and why.

This science fair project idea explores how length affects the weight a bridge can hold.

In this free science fair project idea, we learn about surface tension and how it can support mass—in this case, a floating paper clip.

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

This project examines whether people's taste perception is influenced by what they see.

This experiment has students record rat behavior to learn about the benefits of rats and research rat myths throughout history.

Science fair project that determines whether cooling eggs helps them be peeled more easily. Compare the time it took to peel each egg.

This science project teaches young students about germs, bacteria, and the importance of washing their hands. Students will test what is the best way to wash.

The goal of this evaporation experiment is to learn about how different external conditions affect drying time.

In this science fair experiment, children demonstrate the relationship between the amount of stuff and the amount of pressure in a closed system.

This classic children's game demonstrates how sound travels through air vs. through a solid.

Can a horse lead itself to the carrot? Train your horse with carrots and boxes and test horse memory in this fun zoology science fair project.

Science fair project that develops latent fingerprints on a non-porous objects by converting superglue from a solid state to a gaseous state.

In this project children practice the scientific method while playing with puffy paint.

This fun experiment provides a concrete and visually striking illustration of photosynthesis.

In this science fair project, kids observe the expansion of liquids when frozen and determine if some liquids expand more than others in the freezing process.

What animals are most popular? This project affords practice in data-collection, record-keeping and data-analysis through the investigation of this question.

In this fun science experiment, kids will determine the best method for ripening avocados and discover the cool chemical reaction that makes this possible.

This science fair project idea determines if the size of the parachute will change the rate at which an object falls.

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