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

This science fair project idea produces sounds by creating vibrations using different objects.

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

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

Wondering how we know that air is there? Here's a quick and easy experiment that proves that air may be thin, but it's not too wimpy to block your shot!

A homemade lava lamp gives any room a retro flair. Find out how to make a homemade lava lamp, and learn some science too, with this educational activity.

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

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

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

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

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

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

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

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

In this fun activity, your child will create their very own solar oven to bake s'mores!

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

What's the quickest way to separate salt and pepper? Let static electricity do the work! Your child will be fascinated by this simple experiment.

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

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

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

By using static electricity generated from their body, a child can cause a small fluorescent lamp bulb to light up!

Introduce your child to the amazing, almost magical phenomenon of static electricity!

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

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.

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

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.