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 science fair project creates a visual model of whatâs happening to sound waves as a car approaches and then leaves.

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.

How sensitive is your skin? Here's a fourth grade science experiment that lets your child figure it out.

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

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

Make stunning pendulum waves and learn the math behind the patterns generated with this cool and easy science project.

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.

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.

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

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

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

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

This science fair project idea produces varying pitches of sound.

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!

Try this chemistry experiment with your curious kid and get some "shocking" results!

Make water and clay play a little more scientific with this hands-on experiment that teaches displacement and shows how an object's shape affects its buoyancy.

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

Does your child know that salt water conducts electricity? This simple experiment will show how salt water acts as a conductor to electrical currents.

Students pit the heat capacity of water against the heat capacity of oil while looking at the effects of dipole rotation in this cool science fair project idea.

Make meringues with your first grader and see how states of matter can transform before your very eyes. Here's how:

This science fair project idea investigates which objects float and sink in honey, water, and oil.

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

In this cool sound resonance experiment, learn about frequency and pitch, and use a tuning fork to calculate sound velocity in air.

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

In this fun activity, your child will create their very own solar oven to bake s'mores!

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?

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