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.

Show your child how and why the microwave works, while demonstrating just how strangely foods can behave while inside the crazy cooker.

Science fair project that examines what causes thunder and why a thunderclap sounds so loud. How is lightening related to the creation of sound waves?

Looking for an enjoyable evening activity you can do with your kids? Study the stars: help them learn about constellations by making one of their own.

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

Stir up some enthusiasm for experimentation with this candy-cracking science experiment!

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

What happens when colored beams of light mix? You might be surprised.

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 curious third grader construct a dazzling spinning wheel that will teach him about the science behind colors while providing some silly entertainment!

Most people assume that cold water freezes more quickly, but could that be false? Does hot water freeze faster than cold water? Let's find out!

Here's a fun and simple activity to introduce your child to surface tension, and pull an awesome stunt in the process!

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

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

How does a kazoo, the strings of a guitar, or the speaker of a radio make sound? The purpose of this science fair project is to show how vibration makes sound.

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

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 taste buds science experiment demonstrates how strongly our sense of smell controls what we taste.

Celebrate April Fools' Day with a science prank that is sure to amuse...and educate too!

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

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

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.

How does rust form? Kids will learn about the roles oxygen, water, and electrons play in rust chemistry in this cool science fair project idea.

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

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.

Ready for takeoff! Make science fun and teach about levers and fulcrums as your child sends buttons flying.

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!

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

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

This trick uses vertical and horizontal forces to help your child to push apart your hands apart, no matter how hard you try to keep them together!