Have your child build his own mini waterfall, and help him develop his planning, problem solving, and architectural skills.

.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.

This balloon-powered car project is a great way for your kid to learn about energy and how it can be used efficiently.

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!

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

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

What is the Doppler Effect, or the Doppler Shift? The purpose of this science fair project is to determine how distance impacts the Doppler Effect.

This is a quick, easy science fair project that conveys the idea of density to upper elementary students.

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?

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

If your science savy third grader is up for a challenge, let her bend light with a casserole dish!

Get your hands on a concoction that breaks the rules about what's a solid and what's a liquid.

Stir up some enthusiasm for experimentation with this candy-cracking science experiment!

This project examines Newton's First and Second Laws of Motion with a bicycle and water balloons.

First grade science often covers solids, liquids, and gases. This silly science explores serious facts about the difference between all three.

How powerful is the reaction between baking soda and vinegar? Find out here!

I scream, you scream, we all scream for homemade spearmint ice cream!

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.

Celebrate April Fools' Day with a science prank that is sure to amuse...and educate too!

Satisfy your sweet tooth with this easy summer activity! Make homemade ice cream and let your child practice his science skills.

Little scientists will make inferences about hearing loss, pitch, and frequency in this great science fair idea that puts the human ear to the test.

This science fair project idea produces varying pitches of sound.

Check out this fun science fair project idea to learn about seismic waves and how fast they travel during an earthquake.

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!

This experiment that explores water and air pressure will amaze your fifth grader as it appears that a single card is holding water in an upside-down glass.

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

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 science fair project idea experiments with spinning color wheels and optical illusions.

Explore the wave-particle duality of light! Learn how light can behave as both a wave and a particle in this cool physics science fair project idea for kids.

Delight your budding scientist with this cool physics magic trick and teach her some basic physics concepts while you're at it!