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This kids' activity is fun to perform and impressive to watch. Plus, it's a great example of Newton's First Law of Motion at work.

Teach your preschooler some physics that she can relate to with this fun and simple activity!

Do this experiment to help your first grader understand how salt can be removed from salt water. All it takes are a few household materials.

Play this flashlight game with your child to teach him about objects that are transparent, translucent, and opaque.

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.

Blanket forts are a kid classic! Let your child create a âfortress of solitudeâ on his own for reading, telling scary stories or for cozy cocooning.

Find out the differences (if any) in the frequencies of voices produced from a computer, from a phone, and directly coming out of the voice box of a human.

Make stunning pendulum waves and learn the math behind the patterns generated with this cool and easy science project.

Find out whether matching resonant frequencies can cause objects to shatter.

An home science experiment for older students that teaches about the science behind heat.

Explore the wave-particle duality of light! Learn how light can behave as both a wave and a particle in this cool physics science fair project idea for kids.

The next time you've got a restless second grade earth scientist on your hands, use this experiment to demonstrate crystals and make a tasty treat, too!

The goal of this science fair project is to evaluate the effect of heat on sound wave frequency.

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