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

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

Get your fifth grader involved in some earth science by helping her plan and create her very own rock collection.

Show your fifth grade scientist how to create a siphon using two buckets, plastic tubing, and water. Watch her astonishment as the water travels uphill!

Illustrate the idea of light refraction with this exciting and mystifying experiment.

This science exploration lets your first grader see how eggs can provide a perfect environment for a living, growing creature.

Find a mathematical relationship between the intensity of a sound wave and distance from the sound source. Use a pedometer and a sound level meter.

This science fair project idea studies how talking on a cell phone affect driving?

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

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

This simple "how to make a water wheel" activity makes physics come alive for your child by demonstrating how different kinds of energy work.

How do series and parallel circuits work, and which produces the brightest light in a light bulb? Construct both in this project and find out!

Here's an experiment that will have your child experimenting with cake ingredients to learn about the chemical reactions that happen when a cake's in the oven.

This science activity will help your student explore the changes that occur to transform an egg from raw to soft to hard-boiled.

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.

The goal of this science fair project is to assess the acidity levels of common food and household products using pH test strips.

Kids will conduct a cool limewater carbon dioxide test that can be performed with common household materials to learn about the chemistry of this common gas.

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

In this cool science fair project, kids apply basic algebra to learn how to make a PVC pipe instrument while exploring concepts like frequency and resonance.

In this cool sound resonance experiment, learn about frequency and pitch, and use a tuning fork to calculate sound velocity in air.

These flying potato poppers make a cool sound, create a celebratory mood, and they can teach your child about the power of air pressure.

How fast does light travel in different mediums? Kids conduct a cool refraction experiment in materials like water and air for this science fair project.

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

Learn to solve a crime scene investigation using an important forensics tool: oblique lighting.

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

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

Teach your child about using pumps to move water in this simple and educational preschool science activity!

It's easier than you think to make homemade play dough -- just a few pantry staples makes a natural version of the toy that kids have loved for generations.

Here's an investigative activity in which your child will discover real-world names and uses for sugar and find out how it is hidden in many different foods.

Take the plunge into handcrafting with this neat and tidy soap recipe. Here's how to create your own personalized soap.