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

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

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

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.

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.

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.

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.

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.

In this science and engineering activity, children will explore types of tunnels and their purposes and then design and build a tunnel of their own.

This science project allows students to study the psychology of happiness.

Get your hands on a concoction that breaks the rules about what's a solid and what's a liquid.

Invite your fifth grader to test the different rates of liquid absorption in synthetic and cotton materials, such as nylon and cotton.

Introduce your child to the world of motion and physics with a bit of marble play inspired by Sir Isaac Newton!

Learn about the power of exponents. The objective of this science fair project is to explore and understand how exponents are used.

In this activity, children will let their imagination run wild as they design and build a new planet in the solar system.

The goal of this science fair project is to discover the science behind carbonated soft drinks and apply this knowledge to create a new one.

Based on the concept of water's "freezing point," this activity entails the lowering of water's freezing point to chill ice cream!

In this outdoor science activity you'll find tips on how to create a nature journal by choosing a native plant or animal and tracking that species.

This science fair project idea explores the different properties of matter.

This project explores ways to prevent static electrical shocks.