Does your child always demand to know why the sky is blue, how the sun moves across the sky, or where wind comes from?

This science fair project idea produces sounds by creating vibrations using different 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.

Before Twitter, birds were the ones tweeting, not humans. Have your child discover the magical sounds of nature while recording birds around his neighborhood!

Learn about sound physics and do a survey experiment to explore the difference between sound and noise in this science project.

Science fair project that examines what causes thunder and why a thunderclap sounds so loud. How is lightening related to the creation of sound waves?

This project examines whether playing music during class helps students learn or if it distracts students from learning.

Air invisible; it doesn't make sounds; you can't pick it up and throw it. So how do we know it exists? Help your second grade scientist figure it out.

Learn about nature by making your own mini moss garden.

Help your child learn about animal classification with this fun and delicious activity.

Learn whether writing things down really makes things easier to remember.

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.

How does the size of a vibrating surface affect the pitch of a drum? Learn about drum size and pitch with this easy science fair project idea.

This science fair project will help students learn about non-vascular plants, such as mosses.

Learn whether Mylar Balloons last longer than Latex Balloons or vice versa.

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

Learn all about balance and motion as your child designs a corn maze!

Learn how to make a weathervane with this fun and simple meteorology project for fourth graders.

This science fair project idea attempts to train a worm to complete a simple maze in order to find out if worms can learn and remember.

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

Learn about Ikebana, or the Japanese art of flower arranging, with your child while artfully arranging spring flowers!

In this activity, your child will learn about a style of gardening that uses moss, also called "kokedama."

The goal of this evaporation experiment is to learn about how different external conditions affect drying time.

Make sourdough bread...and learn some colonial history and modern science in the process!

Your third grader will delight in learning about sound waves as he observes the different sounds created by tapping on glasses with varying amounts of water.

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

Check out this fun and easy science fair project idea on germination of a seed and learn to identify exterior and interior parts of a bean seed.

Experiment with buoyancy to learn how a submarine rises and sinks in this classic science experiment.

In this Bernoulli's Principle experiment, you'll learn how an increase in the speed of a fluid, like air, decreases pressure.

This science project challenges students to learn about and classify weeds and discover new practical uses for weeds.