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.

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.

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!

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

This simple "how to make a water wheel" activity makes physics come alive for your child by demonstrating how different kinds of energy work.

Hone your child's skills of observation and take a look at forensic science for an interesting afternoon of exploration and detective work!

Your child will do a fun science experiment using soap and pepper flakes to help understand the concepts of water molecules and the surface tension of water.

Science isn't ho hum anymore when it involves building catapults to teach your fifth grader about projectile motion.

This homemade barometer allows your little scientist to contemplate and compare different air and weather conditions.

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.

This science fair project idea produces varying pitches of sound.

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

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.

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.

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

This 4th of July, explore fourth grade science and make some safe fireworks in your own backyard using soda pop!

Make your own helicopter using a paper clip and a sheet of paper. Hold the spinner up in the air, let it go, and watch it spin gracefully to the ground.

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.

Engineers in training can get started with this simple wheel-and-axle construction activity.

Has your kid noticed how much bigger the moon looks when it's low in the sky? Here's an activity you can do to show them that it's just an optical illusion.

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

Children combine an acid and an alkaline substance to simulate a volcano eruption in this fun experiment.

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

What causes sound? Here's a simple science experiment that adds a visual element to the science of sound to help kids better understand this tricky concept.

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!

In this sound experiment children listen for differences as they tap on a bag of air, a bag of water, and a wooden block held up to their ears.