Why is there more daylight in June than in December if you live above the equator? How does the angle of sunlight shift throughout the year? Answer these questions and more with an interactive article about the sun, its path through the...

Clara becomes Marie, The Mouse King becomes a rat, and the Shadyside section of Pittsburgh becomes the setting for a modern interpretation of Tchaikovsky's famous ballet. Intended as a resource guide for a 2012 performance, the...

You'll be spinning in unit circles once you read through this jumbo-sized resource of everything you need to know about trigonometry. Each page has color-coded examples with explicit directions that detail the problems and...

Who determines the Seven Wonders of the World, and what criteria is used to evaluate these locations? Discover the efforts to promote cultural diversity and preserve man-made monuments during the world's first-ever global vote in 2007 to...

Who is taller? And who is the tallest? Help your Spanish language learners express comparison by teaching them about comparatives and superlatives. The first part of the webpage includes in-depth explanations with examples of...

If you are previewing the film Glory for your young historians, this packet may help you spark ideas for discussion and offer some interesting facts and quotations that may add to your presentation of this Civil War narrative. It...

Was the Southern states' decision to secede from the Union protected by the United States Constitution? Eighth graders discuss the constitutionality of the South's justification for secession, particularly the secession of South...

There is an indescrible energy to Latin American music—but if you know your music theory, it's not so indescrible after all. A thorough packet provides definitions for terms like bolero, charanga, shekere, and tumbao before listing...

In many ways, Victorian Christmas is alive and well today! Class members read an informative passage to learn more about traditional Christmas gifts, decorations, crackers, and visits from Santa Claus in nineteenth-century England—as...

The written form for 345 is three-hundred forty-five, where as the word form for 70% is seventy percent. Here, young mathematicians read 10 sentences and write the word form of each number in the sentences.

In this reading comprehension/biography worksheet, students read 2 pages of information about Simon Bolivar. No comprehension questions are included, worksheets are for informational reading only.

Two important events in U.S. history are described here. The first looks at Rosa Parks with quotes from Parks herself. The second looks at the New York City Ballet and the collaboration between Russian composer Igor Stravinsky and...

Library of Congress site gives a brief history and photo of the water-powered cotton mill that was built by Samuel Slater with links to related material for more in-depth study. Also, links to information about other historical events.

Begins as a bullet-style biography, then a great section called Ideas and Contributions.

This WebChron site contains text describing the attack of Pearl Harbor by Japan.

This site highlights the work of John of the Cross and includes information about his poems.

On This Day is an archive of significant news stories broadcast by the BBC. Link takes you to its report of the bombing of Pearl Harbor broadcast on December 7, 1941. With in-context notes to aid understanding.

Christmas traditions are unique to each family. But we share a common origin of this special holiday. Learn about the fundamentals of this celebration at this Library of Congress site.

One December 25, 1989, Nicolae and Elena Ceausescu were tried by a military tribunal and shot by a firing squad. This is a short recounting of the event.

Information about the Muslim population in Europe can be obtained by clicking on this interactive map. (23 December 2005)

An extensive timeline examining the causes and events of the Cold War. It is preceded by several paragraphs discussing the shifting relations between the United States and Russia in the lead-up to the Cold War. The timeline begins in...

This article is dated December 31, 1999, Yeltsin before Yeltsin surprised the world by resigning from the presidency. It talks about the problems that Russia Yeltsin under Yeltsin, and how unpredictable his behavior had become. There is...

An extensive research report on climate change in the Arctic and the impact this is having on the environment, flora and fauna, and indigenous peoples. (Updated: December 20, 2010)

Defines the term predation, describes the types, and explains the roles predation plays in population management, in species diversity, and in natural selection. (Published: December 28, 2009)