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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.

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.

How do we know that air exists when we can't see it, taste it, or touch it? Here's a classic experiment that will teach your kid some basics of aerodynamics!

If your fourth grader is obsessed with all things glow-in-the-dark, then here's an activity that will really light up her imagination!

Show your kids the power of baking powder by conducting a simple experiment. Make four batches of cornbread, all identical except for one thing: baking powder!

Try the classic balloon-on-the-wall trick with your kid and watch static electricity in action.

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

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

This science fair project idea produces varying pitches of sound.

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

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

Help your child understand surface tension by showing them how they can create a "skin" on top of water.

Take this "paper plate snack test" with your child for a hands-on lesson in making healthier choices to teach your child about what's in his food.

This classic children's game-connecting two cups with a string-demonstrates sound's ability to travel through air vs through a solid.

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

Bring the magic and mystery of the night sky to the light of day with this fun constellation art project!

Here is a quick experiment you can conduct at the playground to introduce or reinforce the concept of Newton's First Law, The Law of Inertia.

Is it solid or liquid? Create oobleck and witness the amazingly weird oscillation between the two!

The pinwheel is a simple toy that has been around for years and uses the wonders of the wind to spin it and delight kids of all ages!

Help your own young scientist tackle the wonders of static electricity from the comfort of his own home!

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.

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.

Teach your little scientist about the amazing powers of gravity by comparing the falling speeds of two yummy fruits

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

Help your second grade scientist explore the timely topic of wind speed using a version of the classic Beaufort Scale.

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

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

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

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

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.