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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.

An hour glass, also known as a sand clock, keeps time. In this activity, your child will make her own sand clock and measure the time it keeps.

Here's a fun math and science activity: help your child explore four different kinds of measurement, using their hand and a few simple household tools.

In this physics project, learn about the relationship between light intensity and distance using a laser pointer, flashlight, and graph paper!

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

In this 3rd grade science activity, you'll experiment with the little-known fourth state of matter: polymers! Mix borax with white glue and watch what happens.

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

Help your child experiment with the combination of acid and baking soda by making these homemade bath bombs!

This easy aerodynamics activity is a simple way to introduce kids to the scientific method.

In this activity, you'll not only make your own bouncy balls at home, but your child will also learn how polymers are made.

Combine the science of physics with the fun of playing spy. Your young detective can make his own tiny looking glass. It's simple to make!

Making your own glass cleaner is easy, effective and inexpensive!

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.

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

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 child get a grasp on what it was like to build gigantic ancient structures with this easy engineering activity about science and physics.

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

Explore scientific concepts with this experiment that introduces kids to the scientific method!

Your kid can learn about the process of making frozen yogurt and enjoy a homemade, flavorful dessert. Experiment with this fun, chilly food!

Take to the air with science by experimenting with helicopter seeds right in your own backyard!

In this Halloween-themed activity, young learners will find out what happens when they mix two household items together to create a surprising chemical reaction.

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

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

When you see those sunscreen "protection levels," what does that really mean? Try this experiment to find out.

How sensitive is your skin? Here's a fourth grade science experiment that lets your child figure it out.

Try this chemistry experiment with your curious kid and get some "shocking" results!