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How does water pressure change with depth? Kids learn how pressure works underwater with this cool and easy demo.

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

In this science fair project, you'll make a "ghost" appear in a test tube, and learn about what happens when hot water and cold water interact.

The next time you and your fifth grader go on a hike, take along this key to figure out which common North American animal left a track along the river bank.

The objective of this science fair project is to test the growth rate of a plan in a crystal medium in comparison to traditional soil.

Put your second grade scientist to work this Fourth of July with our colorful "liquid fireworks" project!

Discover how to make fake snot with this cool science fair project idea to learn about polymers, enzymes, and more.

Have your child kick off their summer vacation by making a miniature water slide!

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

Discover whether a metal will expand under hot water.

Total alkalinity and pH personal care products are controlled to prevent skin irritation. Learn more about basic and acidic substances in this science project.

Brine shrimp usually live in saltwater. Investigate how salt concentration (salinity) affects the rate at which brine shrimp eggs hatch.

Check out this fun and easy 4th grade science fair project idea that tests how gravity induces positive and negative geotropism (gravitropism) in bean plants.

In this experiment, young ecologists will learn about a type of edge effect: how trees and plants at the edge of a forest can act as a weed filter.

Help your child create a magical miniature garden in the most unlikely of places: a recycled plastic bottle!

This homemade barometer allows your little scientist to contemplate and compare different air and weather conditions.

Excite your fourth grader by recreating ancient Viking myths. This miniature longboat will explore the principle of water molecules expanding when heated.

Determine whether butterflies like to drink sugar water, salt water, or plain water.

How does dishwashing liquid work? Kids discover the chemical mechanism behind cleansing power in this easy science fair project idea.

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

This experiment explores whether reading text on a computer screen or type on paper leads to better retention of the information read.

This project demonstrates the correspondence between the volume of water displaced by a submerged object and the volume of the object displacing it.

Perk up your front porch with this hanging vase craft, perfect for spring and for getting kids outdoors!

Ant behavior is closely related to light intensity. This free science fair project idea examines how fast ants dig when they are exposed to to light and dark.

This interdisciplinary card game will have your third grader working on math facts as he travels through the solar system!

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

Take a dive into the candy jar with this yummy science experiment.

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

Here's a fun math and science activity: help your child explore four different kinds of measurement, using their hand and a few simple household tools.

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