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How does bleach kill bacteria? Kids find out in this impressive bacteria science fair project by testing different concentrations on a safe strain of E. coli.

The rock cycle will come alive for your child when he uses broken crayons to create the three basic rock types.

This project examines the concentration of dissolved oxygen in water, with and without oil.

In this activity, your child will be asked to create a boat that can successfully float while holding 25 pennies.

This science fair project idea determines the most effective method of preserving food.

Kids will love making sugar crystals in this sugar crystal science fair project which teaches important chemistry concepts like saturation and solubility.

Learn about the layers of the Earth and make a model! Create a earth layer book, cake, or clay diagram.

Teach your fifth grader about the wonders of wind by making and observing this winter wind chime.

Little scientists will make inferences about hearing loss, pitch, and frequency in this great science fair idea that puts the human ear to the test.

This science fair project ideaexplores whether cooking food destroys potential vitamin levels.

Find out which part of a flame burns wood the fastest and also if this is true for all types of flames such as candle-flame, burners, and lighters.

Your third grader will delight in learning about sound waves as he observes the different sounds created by tapping on glasses with varying amounts of water.

Introduce your second grader to the crazy world of static electricity with just a balloon and a sheet of paper.

Show your child that the simplest ingredients (salt and water) can be used to illustrate the concept of density!

In this fun science project, learn about what happens to cut fruit and experiment with how to stop apples from turning brown.

Explore how dielectric heating comes into play when microwaving various liquids in this science project. This test will help you understand how microwaves work!

The goal of this middle school science fair project is to examine the effect of caffeine on plant growth.

In this cool sound resonance experiment, learn about frequency and pitch, and use a tuning fork to calculate sound velocity in air.

Test the combustion of different types of woods.

This science fair project idea tests the efficacy of both synthetic and natural antibiotics.

Check out this fun middle school science fair project idea on Newton's third law of motion and how you can change the speed of a rocket.

Enlisting the cooperation of your teenager to help prepare your household for an emergency is the perfect way to get set, fast.

Believe it or not, images that are cast upon your eye's light-sensitive screen (called the retina) are upside down. Here's a fun, fast experiment to prove it!

Here's a fun and simple activity to introduce your child to surface tension, and pull an awesome stunt in the process!

Deck the halls with last season's Christmas lights for a spectacular and electrifying science activity.

What's cooler than an explosion? Not much! This simple science experiment lets kids build their own pop rocket. So put on your safety goggles and let her rip.

Here's a first grade ladybug game that explores how air can move solid objects, and adds some measurement practice, too. Play, learn, and enjoy!

This science fair project idea studies which brand of wintergreen candy produces the most sparks in the dark.

This project explores whether plants can live and grow when "watered" with juice, soda, or milk.

This science fair project idea examines whether adding gelatin causes a solid to have a higher melting point and/or melt slower.