Explains different kinds of energy, covering kinetic, potential, gravitational, mechanical, sound, thermal, chemical, electrical, and radiant energy. Also looks at storage, transfer, and dissipation of energy. Includes a short...

Read about photosynthesis, what light and dark reactions are, the structure of a leaf, the conditions needed for photosynthesis to occur, where and how photosynthesis takes place, and how root structure impacts on photosynthesis.

Learn all about clouds, how they form, the different types, and how they can be used to predict the weather.

What is light pollution and why should we care about it? Learn what it is, the different types, sources of this type of pollution, the impact it has, and ways to combat it.

Explains how cancer develops and spreads, some causes of cancer, different types, how it is diagnosed, signs and symptoms of cancer, treatments, and tips for preventing it.

The issue of obesity is addressed - what it is, the causes, the health and social problems it causes for the individual, types of fats in food, reduced fat and diet foods, how to prevent it, how to help someone with a weight problem, and...

This site contains lessons using Geometer's Sketch Pad for elementary and middle school aged students.

In this biology science fair project, test various amounts of glucose to see which ones attract and which repel (chemotaxis) growing Physarum polycephalum slime mold.

Many sports use a ball in some way or another. We throw them, dribble them, hit them, kick them, and they always bounce back. What makes a ball so bouncy? In this experiment you can investigate the effect of air pressure on ball bouncing.

Did you ever wonder how yeast makes bread dough rise? This project will show you what yeast does to make this happen. You'll also investigate the conditions yeast needs to grow.

If you look carefully, you could find dozens of similar interesting phenomena that are all linked to the surface tension of water. Here is a project that will help you understand and measure the properties of water surface tension.

In this project, you'll need: a puck, a hockey stick, a tape measure, at least one helper with a stopwatch and an empty rink. Have your friend start the watch just as you make contact with the puck, and stop it when the puck hits the...

This is a good first-time programming project. You'll learn how to use JavaScript to create a basic calculator program that you can run in your Web browser.

This is a challenging first-time programming project. You'll learn how to use JavaScript to create a simple program to analyze one or more paragraphs of text. Your program will count sentences, words and letters, and report the resulting...

In this lesson, Ralph Fletcher's writing style is introduced to student writers. Students will write a rough draft about a time they ate, or a time when they saw someone else eat, something unusual. Then students will read and analyze...

On Sunday, November 4 at 2 a.m, clocks in U.S were set back by an hour as Daylight Savings came to an end. What is DST? Who first proposed the idea? Is it practiced around the world? Let's take a look in this video. [0:37]

Learn how to infer the implicit theme in a work of fiction, distinguish theme from topic, and make complex inferences using textual evidence.

Learn how to determine the meaning of grade-level academic English words derived from Latin, Greek, or other linguistic roots and affixes.

Learn how to explain a playwright's use of dialogue and stage directions.

Detailed instructions, with photographs for every step, for how to build a coral reef diorama.

A lengthy list of geometry terms arranged alphabetically. Includes labeled illustrations and definitions for each.

Learn about food safety and keeping healthy on the FDA Kids' Home Page. This site includes colorful graphics, great information, and it is easy to navigate.

In this lesson, students will review two elements of fiction, setting and plot, and learn how the setting influences the plot in stories.

A hands-on lesson plan for helping young scholars understand simple circuits, series circuits, and parallel circuits, and the differences between the three.