An explanation of advanced atomic theory based on developed concepts from earlier scientific experimentation.

An introduction to the mole, a unit of measurement that quantifies atoms and molecules.

Learn about different leadership styles and decide which one works best for your situation and personality. Because there is no "right" way to lead in every situation, the different styles and theories of leadership presented here can...

This site from The Victorian Web allows one to read about relationships between Victorian men and women. This article focuses on the sexual tensions and stereotypes prevalent during the Victorian Era, and defines the "roles" of men and...

Describes how to use dot products to project one vector onto another.

Learn about different leadership styles and decide which one works best for your situation and personality. Because there is no "right" way to lead in every situation, the different styles and theories of leadership presented here can...

Two migration theories are on the table for consideration. Weigh the evidence of each one in this article by Donald Johanson of Lucy fame.

This illustrated timeline from the NOVA Web site turns back the clock to the late 1500's to relive the dramatic life of one of the world's most renowned scientists.

Excellent, clearly written introduction to "virtue theories" of morality. Reviews the archetypical theories of Aristotle and Aquinas before turning to contemporary versions. Presents one possible philosophical critique of virtue theory...

This unit plan presented by the Evolution and the Nature of Science Institutes is one way to introduce evolution. The authors have created a Pre-test about what evolution is/is not to address misconceptions. There are handouts and...

Biography of Albert Einstein (1879-1955), one of the most famous physicists of the last century, best known for his theory of relativity.

A detailed report on one of the world's most famous, yet least visited archaeological sites, Easter Island. This site covers many of the theories surrounding the island, ancient and recent history and has some great pictures.

Explains the history of the lost Roanoke Colony and the various theories about what may have happened to the colonists. Virginia Dare was the first English child born in the New World, yet no one knows what eventually happened to her.

James Clerk Maxwell was one of the most influential scientists of the nineteenth century. His theoretical work on electromagnetism and light largely determined the direction that physics would take in the early twentieth century. Indeed,...

Resource provides a discussion of the concept of "Lebensraum," or "living space" for the German people. This was one of Hitler's main justifications for his military conquests.

Minutes after its take off from New York's Kennedy International Airport, a Boeing 747 headed for Paris exploded midair over the Atlantic Ocean off the coast of Long Island on July 17, 1996, leaving all 230 people aboard dead. The...

This lesson focuses on Euler's Equation. Any (finite) graph can be constructed by starting with one vertex and adding more vertices one by one. We have shown that, whichever way we add new vertices, Euler's equation is valid. Therefore...

One knife pulled from the sea may shed more light on the mysteries of the first Americans. Archaeologists are still shaping the new Coastal Migration Route theory one artifact at a time.