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

Use pepper and soap to discover some fun facts about the properties of water.

In this air pressure science experiment with a balloon and a jar, children will use heat to create a partial vacuum and suck a balloon into a jar.

Learn about this simple machine and make a pulley of your own to use for fun science trials.

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

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!

What is surface tension? Kids will discover how water-skating insects use surface tension to keep from sinking by making a model water walker.

Using a toy race car kids create a visual model of the Doppler Effect.

For this science fair project, kids will learn how to make a lemon battery. They can conduct this classic experiment using readily available materials.

Study the life cycle of the common blowfly as it relates to forensic investigation. Record the first time you see flies, maggots, and eggs.

In this science fair project, young children discover what happens when two fluids that have different densities get together.

This science fair project idea investigates if webbed feet help a duck (and others) swim.

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

This project leads to an understanding that a whole may be built of smaller parts that fit and work together and provides an introduction to basic tools.

Kids will learn how to show the direction of magnetic field lines and create a permanent model using iron filings in this great science fair project idea.

This engaging project encourages young children to practice and refine the important scientific skills of sorting and classification.

This science fair project idea teaches that time always passes at the same rate and nothing we do in our daily life âreallyâ affects how fast it moves.

In this project combining nature, art, math, and science, children make rubbings of leaves then observe shapes and structures and sort the leaf images.

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

This science fair project idea investigates how optical distances change the apparent size of an object as seen through a magnifying lens.

Test whether plants can grow without sunlight and water.

How do organic materials become soil? This science experiment measures what materials biodegrade.

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

In this science fair project, you'll make a "ghost" appear in a test tube, and learn about what happens when hot water and cold water interact.

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.

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

Find out whether we can create motion in a dish and as a result, create a wonderful and colorful show.

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

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

This classic children's game-connecting two cups with a string-demonstrates sound's ability to travel through air vs through a solid.