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

Find the North Star, and measure your latitude! The purpose of this science fair project is to find latitude and learn about geographic locations.

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

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

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

Do different types of oil mix or stack? Find out in this science fair project idea!

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

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

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

What's the science behind those out-of-sight roots? Find out if you can trick roots into growing in different directions.

How can we describe the relationship of magnetic field strength vs. distance? Kids will find out with this free science fair project idea.

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.

Did you know a mouse eats almost fifty times as much as a cow? Find out how and test out the strange science with your friends!

In this Halloween-themed activity, young learners will find out what happens when they mix two household items together to create a surprising chemical reaction.

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.

How do animals keep warm? In this experiment, find out whether fat insulation resists cold temperatures and learn how this works in the animal kingdom.

Do you think you can blow down a sand castle with a mighty wind? Find out which material stands up best to erosion in this erosion experiment.

This science fair project teaches students the differences between fruits and vegetables.

In this sound experiment children listen for differences as they tap on a bag of air, a bag of water, and a wooden block held up to their ears.

There are many benefits to bugs and insects. This science project shows how cockroaches, termites, and other critters benefit our planet.

This science fair project teaches students about wilting and browning of salad greens.

Plants and light seem to be good buddies, but how far does the friendship really go?

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

Science fair project that examines the different types of precipitation, evaluates the density of snow and calculates the ratio of snow-to-liquid.

Ready for takeoff! Make science fun and teach about levers and fulcrums as your child sends buttons flying.

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

In this science fair project, students learn how pressure can make the minerals in a rock line up in the same direction and form bands and foliation.

This science fair project will help students learn about non-vascular plants, such as mosses.

Start your toy engines -- this is going to be a fast and friction-filled race!

Here is a hands-on activity to help third graders understand the four points of a compass...and how we use them to get around.