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Help your kindergarten scientist discover relative size, density, and buoyancy with this fun, pumpkin science project!

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.

In this activity, young learners will make a balance using a plastic hanger and weigh a variety of small objects using candy corn.

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

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.

Help your child understand the scientific concept of evaporation with this fun outdoor science activity.

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.

Teach your child some scientific basics as you explore the densities of various liquids in this fun experiment.

How do we know that air exists when we can't see it, taste it, or touch it? Here's a classic experiment that will teach your kid some basics of aerodynamics!

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

Sink or swim? Calculate the density of various fruits and vegetables using water and a kitchen scale.

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

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

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 easy aerodynamics activity is a simple way to introduce kids to the scientific method.

Conduct a simple science experiment to see if flowers from your garden pass the acid-base indicator test with this exciting chemistry activity.

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.

Has your kid noticed how much bigger the moon looks when it's low in the sky? Here's an activity you can do to show them that it's just an optical illusion.

Here's an experiment that will have your child experimenting with cake ingredients to learn about the chemical reactions that happen when a cake's in the oven.

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

Teach your preschooler some physics that she can relate to with this fun and simple activity!

This easy Halloween-themed science experiment for first-graders is perfect for chilly October afternoons or great as a Halloween party activity.

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.

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

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

Take to the air with science by experimenting with helicopter seeds right in your own backyard!

Here's a fun at-home activity that will help your child strengthen math skills using high and low temperature data, and become a master temperature tracker!

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

The objective of this experiment is to identify common materials that absorb sound waves with the greatest efficiency.

Discover the force of water! This article provides step-by-step instructions for creating your own science experiment.