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.

How to test for acids and bases? In this activity you and your child can make your own indicator from red cabbage!

Kids will conduct a cool limewater carbon dioxide test that can be performed with common household materials to learn about the chemistry of this common gas.

Conduct a simple science experiment to see if flowers from your garden pass the acid-base indicator test with this exciting chemistry activity.

Here's a fun at-home activity that will help your child strengthen math skills using high and low temperature data, and become a master temperature tracker!

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

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

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

In this fun science fair project idea learn about universal solvents and solutes and find out the solubility of several common liquid substances.

What is elasticity? Students will investigate how this concept applies to bouncing ball physics by testing the bounces of balls made out of different materials.

Students pit the heat capacity of water against the heat capacity of oil while looking at the effects of dipole rotation in this cool science fair project idea.

Learn with makes water molecules work with this fun and easy science activity!

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

This science fair project idea produces varying pitches of sound.

This project demonstrates the correspondence between the volume of water displaced by a submerged object and the volume of the object displacing it.

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

All you need are pencils, paper and some scissors to get started on this easy and fun game to review astronomy information, or other types of study concepts.

It's food. It's Thanksgiving tradition. And guess what: Cranberry Sauce is also science! Try our simple recipe/experiment.

This science fair project creates a visual model of whatâs happening to sound waves as a car approaches and then leaves.

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

In this science fair project, kids start a chemical reaction that will make a balloon inflate itself!

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

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

This Mother's Day, mix in some fifth grade science learning to create this fabulous fudge!

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

Show your child how to concoct a simple duo of household ingredients that changes color as acids and bases are added!

Every time a sound is produced it emits a sound wave. This experiment demonstrates how sound travels, using nothing more than a spoon and a string!

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 demonstrates the principles of reflection through simple experiments involving mirrors and light.

Using an empty tennis ball can and a swimming pool, you will determine if it's possible to have a conversation under water.