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

This science fair project idea determines which method of hand cleansing is the most effective.

Teach your child some scientific basics as you explore the densities of various liquids in this fun experiment.

Make water and clay play a little more scientific with this hands-on experiment that teaches displacement and shows how an object's shape affects its buoyancy.

Let your fourth grade chef mix up butter and sugar with scientific principles about different states of matter, and get delicious toffee, too.

How greasy are your potato chips? Students will use a reliable method to quantify greasiness and compare different brands in this great science fair project.

What is the best stain remover for clothes? In this fun and easy science fair project idea, students will identify the best method for laundry stain removal.

This science research project challenges students to think of more effective lobster farming methods.

In this fun science fair project idea, kids will experiment with various methods in order to discover the fastest way to cool a soda.

Along with being an interesting science activity, dehydrated strawberries are also tasty â and healthy!

Does your middle school teenager have good reflexes? Gauge his reaction time in this science and math activity that requires only a yardstick and a friend.

Experiment with buoyancy to learn how a submarine rises and sinks in this classic science experiment.

Kids conduct a simple birdseed experiment to figure out what kinds of birds live nearby in this fun science activity.

In this science experiment, your child will test the strength of hollow structures in order to understand how strong bird bones really are.

Get your fifth grader involved in some earth science by helping her plan and create her very own rock collection.

Help your fifth grader execute this experiment involving a lit candle (submerged in water!) to show him the wonders of heat energy transference.

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

Children will learn all about cause and effect as they experiment with potion-making in this Halloween themed activity.

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

This project determines the age of a tree using a growth factor chart instead of cutting the tree down to count the rings in its base.

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

Take a look at forensic science with your child. She'll learn how to take a shoe impression, just like the detectives do!

Collect meteorite dust with a magnet in your very own backyard! The objective of this science fair project is to gather meteorite dust to study outer space.

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

With this hands-on activity, you'll show how fall colors are hidden in the leaf all year long!

The purpose of this science fair project is to build a basic radio.

Would it hurt to skip brushing your teeth just this once? Let's find out by seeing which foods produce the most mouth bacteria.

Explore the chemistry of latex polymers with this outrageous, hilarious science activity.

Science fair project that uses muriatic acid to develop fingerprints that would otherwise be invisible.

This science fair project idea examines the reason boats are shaped and engineered.