This activity is a great introduction to polymer chemistry. It might seem complicated, but all you'll need is the material found inside of a baby's diaper!

This experiment will explore how mallets of various materials and weight create sonic tones of varying lengths.

In this fun science fair project idea learn about the multiple sources of radio waves and fin out how difficult it is to block them.

The objective of this experiment is to identify common materials that absorb sound waves with the greatest efficiency.

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.

Invite your fifth grader to test the different rates of liquid absorption in synthetic and cotton materials, such as nylon and cotton.

What is elasticity? Students will investigate how this concept applies to bouncing ball physics by testing the bounces of balls made out of different materials.

Use reusable, recyclable materials--along with a dose of imagination--to build a castle with first grade geometrical forms.

Design a hearing protection device to protect their ears from loud noises. Examine the properties of current protective hearing devices, materials.

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.

Bring back the groovy memories by making shrinky dinks using household materials, while learning about the science of plastics. Here's how to get started:

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.

Using simple materials found around your home, you can reinforce the static electricity concept by helping your child build a simple device with zapping power!

Discover whether different amounts of water added into a wine glass will produce a different pitch when their fingers are rubbed along the rim.

Future whistleblowers can learn about product safety standards with this exercise in writing and researching.

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.

Determine the relationship between the speed of a sound and the temperature of the air it passes through.

Your child will learn science and make a fun new malleable toy with this balloon sandbag science experiment.

.Have you ever had problems with your wifi signal strength? In this experiment you will learn about how wireless signals pass through the air and solid objects.

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.

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.

Here's a great activity that uses corks and toothpicks to create a fleet of floating boats. Which design makes for the most seaworthy vessel?

This fun marbled paper craft uses things you're likely to have around your house, and it teaches kids some simple chemistry too!

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

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

Your child might have noticed how bubbles quickly lose their colors and pop. Check out this creative way to make those bubbles last longer.

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

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

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

Explore concepts in current and coltage with these Van de Graaff generator experiments.