The goal of this science fair experiment is to demonstrate the effects of air pressure on objects and analyze applications of air pressure principles.

In this cool engineering science fair project, kids learn how to build Hero's engine: an enlightening example of Newton's third law.

In this project, you'll build a model of the earth, complete with all seven continents and four major oceans.

Science fair project that determines whether lettuce that is harvested gradually yields more produce than lettuce that is harvested all at once.

What makes your shadow dance around all day? Let's play detective and find out why that sneaky shadow never stays in one place for long.

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

The objective of this science fair project is to explore the relationship between acidic and basic compounds.

This science project uses Mohsâ Hardness Test to show kids how to compare the hardness of different types of minerals.

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.

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 science experiment has students test whether a snail moves faster on concrete or dirt.

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

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

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.

Stories change as you retell them. The objective of this science fair project is to demonstrate how information gets interpreted, distorted and changed.

In this science fair project, students use the streak test to tell minerals apart from each other.

In this project, build an insect model that shows how the head, thorax, and abdomen fit together! Learn insect anatomy by constructing a paper mache critter.

In this project children discover, identify, and sort seeds from a variety of fruits and vegetables

This science fair project idea explores the egg's thin membrane.

In this cool science experiment, learn about magnetism and poles, and test magnet strength to find out if two magnets are twice as strong as one.

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.

This science fair project idea explores whether the process used to dry the beans we eat for food renders them unviable.

In this free science fair project, learn how to separate salt from water using heat. A great science project for elementary school kids.

With Halloween right around the corner, find a way to use your brain and reward your tummy with a new type of science -- candy science!

In this experiment, students will create their own version of coquina, a sedimentary rock thatâs formed by seashells and sand, cemented by seawater minerals.

This project determines whether Styrofoam, paper, or plastic cups are best for preventing ice from melting.

Step into the fantastic world of colors with a project that explores what shade you -- and your friends -- like best.

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

Is it magic? No...it's the amazing, gravity-defying capillary action experiment! Kids will love this dramatic and enlightening science fair project.

This science fair project idea investigates how magnetism can defy the force of gravity.