Observe how your brain works while it is focused on one thing, and how it works while you are distracted by another thing.

Learn how to make marbleized paper with simple everyday ingredients in this fun activity! Your child will learn about oil and water while doing this project.

This science fair project idea explores the relationship between oil and water in terms of density as well as hydrophilic/hydrophobic compounds.

This is a quick, easy science fair project that conveys the idea of density to upper elementary students.

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

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

Here is a nifty science experiment using Epsom salts to make "frost" appear on a piece of glass.

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

Sink or swim? Calculate the density of various fruits and vegetables using water and a kitchen scale.

This science fair project idea experiments with spinning color wheels and optical illusions.

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

In this activity, you'll not only make your own bouncy balls at home, but your child will also learn how polymers are made.

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

Teach your child how butter is created by shaking up cream the old-fashioned way.

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 examines how tsunamis travel by simulating a tsunami moving around an island. You will generate a pretend tsunami in a swimming pool.

Check out this mind-blowing experiment in which a hard-boiled egg will fit through an impossibly small opening with the help of only a few matches!

This science fair project idea investigates which objects float and sink in honey, water, and oil.

Help your child get a grasp on what it was like to build gigantic ancient structures with this easy engineering activity about science and physics.

Take advantage of the fact that ink and water don't mix and introduce your kid to suminagashi, a Japanese form of art.

Turn the common pastime of constructing paper airplanes into a lesson on the physics of aerodynamics and flight with this fun science activity.

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

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

This experiment that explores water and air pressure will amaze your fifth grader as it appears that a single card is holding water in an upside-down glass.

This science fair project idea explores whether talking to a plant will help it grow.

The objective of this science fair project idea is to determine if sound travels best through the air, water or a solid.

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

Believe it or not, the common spud has enough electrochemical energy to power a small digital clock.

Try this chemistry experiment with your curious kid and get some "shocking" results!

Give your budding young observers a chance to discover simple machines at use in their own home.