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.

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

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.

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

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

For this science fair project, kids will learn how to make a lemon battery. They can conduct this classic experiment using readily available materials.

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:

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!

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.

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.

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.

Observe how your brain works while it is focused on one thing, and how it works while you are distracted by another thing.

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.

Here's one way to recycle: turn a tuna can into a mini barbecue and teach your child the power of resourcefulness!

Show your teen how to make her own beeswax lip balm. It's one of the simplest do-it-yourself activities, and it's fun to make!

Show your kids the power of baking powder by conducting a simple experiment. Make four batches of cornbread, all identical except for one thing: baking powder!

Wool can absorb 1/3 of its weight in water, while still keeping the body warm. She can test this theory by performing a scientific sock comparison!

This activity will help your child review science concepts, learn new ones, and become familiar with examples of various concepts in science. Plus, it's fun!

Why are some pennies shiny and others dark and dull? Find out with this cleaning copper coins experiment, which transforms dark pennies to bright ones.

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.

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

In this sound experiment children listen for differences as they tap on a bag of air, a bag of water, and a wooden block held up to their ears.

This recipe makes bubbles that not only blow up nice and big, but do tricks and experiments! How do you do it? It's not a secret, it's science!

In this challenge, students are tasked with creating a car that can be powered by a balloon!

This classic children's game demonstrates how sound travels through air vs. through a solid.

What do you get when you combine science and fairies? Fairy scientists who make their own potion, of course! This activity promotes critical thinking skills as your child mixes, experiments, and creates their very own fairy potions.

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

This classic children's game-connecting two cups with a string-demonstrates sound's ability to travel through air vs through a solid.