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

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

In this fun science fair project idea learn the difference between additive and subtractive color and why they are handled differently.

The goal of this science fair project is to evaluate the effect of heat on sound wave frequency.

This science fair project idea explores whether talking to a plant will help it grow.

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

Help your second grade scientist explore the timely topic of wind speed using a version of the classic Beaufort Scale.

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

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

Put a twist on traditional oil painting with this fun science activity that you and your first grader can do together.

Demonstrate how we are able to locate sounds, echolocation. Have a blindfolded subject locate you by the sound of your clapping.

In this science fair experiment, students learn about the scientific principles behind Doppler ultrasound.

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.

.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.

With this activity, not only will you be experimenting with giving accurate information, you'll also teach your child how to write good scientific procedures.

All you need are pencils, paper and some scissors to get started on this easy and fun game to review astronomy information, or other types of study concepts.

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.

This awesome diffraction grating experiment puts high school students' applied math skills to the test by having them calculate the wavelength of laser light.

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

Turn the common pastime of constructing paper airplanes into a lesson on the physics of aerodynamics and flight with this fun science activity.

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!

Help your child get a grasp on what it was like to build gigantic ancient structures with this easy engineering activity about science and physics.

Magic, science, or household cleanser? Let your second grader decide with this practical, nontoxic chemistry experiment with acids and bases.

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.

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

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.