How much energy does it take to light a room? Class members calculate the total wattage it takes to light the classroom. Through calculations, responsible scientists determine the cost of energy for the year, then figure out...

What does it cost to keep the lights on? Through a hands-on activity, class members use a watt meter and determine the amount of energy different types of light bulbs use. The class then determines the financial and environmental...

How can a hand puppet's shadow look like a dog? The lesson explains the science behind shadows, combining paint colors and the colors used in old televisions. Scholars use white, red, blue, and green lights to experiment with colors...

Encourage mastery of demonstrative adjectives and demonstrative pronouns. Try out the presentation to introduce your class to the concepts and practice with two integrated exercises. The At a Glance tab and Full Lesson tab can be used...

Put together an English language arts unit on the six traits of writing with this helpful collection of resources. From fun songs to differentiated writing exercises reinforcing each of the traits, great ideas are provided for...

An informative physics lesson includes two teacher demonstrations, one on AC currents and the other on DC currents, allowing pupils to take notes while watching. The resource includes questions to assign as homework or...

Learn about the early developments of the invention of the incandescent light bulb and Thomas Edison's development of the first practical light bulb.

Here is a very detailed biography of Thomas Edison ranging from his boyhood and his work as a telegrapher, moving on to his invention of the phonograph and incandescent light bulb, and finally, a description of his laboratories where he...

A good description of the inventions and life of this bright and ambitious man. As inventor of the light bulb, phonograph, movie camera and many others, Edison lived a very inspiring life. In Spanish.

A profile of Thomas Alva Edison, who lived from 1847 to 1931, an American who made many important inventions, such as the electric light bulb. A timeline of his inventions is provided here.

The telephone and first practical incandescent light bulb are invented while the word "electron" enters the scientific lexicon.

Use this site to learn about the inventor of the carbon-filament light bulb, Lewis H. Latimer (1848-1928 CE).

Brief biographical sketch of Thomas Alva Edison, inventor of the light bulb and phonograph.

The "Wizard of Menlo Park" brought the world electric light, recorded music, and the movies, among other things, and turned innovation into a science by inventing the research laboratory.

This site provides information on American inventors Benjamin Franklin, Robert Fulton, Eli Whitney, Thomas Jefferson, Isaac Singer, Wilbur Wright, Thomas Alva Edison, Elias Howe, and Alexander Graham Bell. It offers pictures from and...

In the late 1800's, Thomas Edison and his fellow inventors were key in the American film industry's boom.This web site provides a podcast and accompanying transcript tracing the roots of the film industry in America. Podcast [21:27]

An article by Paul Israel from the Prototype newsletter discusses the various laboratories used by Thomas Edison as he was developing his inventions.

Compared to incandescent lamps, fluorescent lamps last longer, require less energy and produce less heat, advantages resulting from the different way in which they generate light.

The biography of the fascinating African-American inventor, Lewis Latimer. In addition to finding out about his development of the carbon filament for the incandescent lamp, you can read about his expertise in patent law, his association...

[Free Registration/Login Required] Article considers the inventions and innovations in communication, transportation, and manufacturing that drove America forward in the nineteenth century. Includes a link to an interactive history of...

Use this site to learn more about early inventors and inventions from the 18th century. This web page offers text and images on various inventors and their inventions. You can also access information about inventors and inventions from...

Smithsonian site features the life and many accomplishments of Lewis Latimer, the famous African-American inventor.

A variety of images, photographs, and information on the life of Thomas Alva Edison (1847-1931) can be found in the site by the Library of Congress. Information can be found here regarding his invention and influence on American society....

Read about the life of Thomas Edison and his many inventions.