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.

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.

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

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

All you need are pencils, paper and some scissors to get started on this easy and fun game to review astronomy information, or other types of study concepts.

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

This science fair project demonstrates the principles of reflection through simple experiments involving mirrors and light.

Hone your child's skills of observation and take a look at forensic science for an interesting afternoon of exploration and detective work!

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

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.

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!

Using an empty tennis ball can and a swimming pool, you will determine if it's possible to have a conversation under water.

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.

Believe it or not, images that are cast upon your eye's light-sensitive screen (called the retina) are upside down. Here's a fun, fast experiment to prove it!

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

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!

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.

Learn with makes water molecules work with this fun and easy science activity!

Here's a fun activity that will introduce your fourth grader to the concept of frictionless motion by constructing a hovercraft.

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.

This surprisingly good glue recipe comes from common kitchen items.

Along with being an interesting science activity, dehydrated strawberries are also tasty â and healthy!

This science fair project creates a visual model of whatâs happening to sound waves as a car approaches and then leaves.

Here's an interesting activity that will enable your child to make his own magnifier out of a drop of water

Popsicles aren't just for the summertime, this activity takes cold and turns it into a creative and tasty science experiment.

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

This science fair project idea produces varying pitches of sound.

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

Take a look at forensic science with your child. She'll learn how to take a shoe impression, just like the detectives do!

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!