Sue T. Rex is the largest, most complete Tyrannosaurus Rex skeleton to date. It was discovered and excavated by the Black Hills Institute of Geological Research in South Dakota. The U.S. Government seized Sue from the Institute in 1992...

Discover citizen and U.S. President Thomas Jefferson's daily routine, habits, inventions, and the home that he designed for his Virginia plantation.

The author of this site provides a solid base of information about the U.S. flag that includes the evolution of the flag and the history of Flag Day. Students will discover why the flag is known as Old Glory and the important role...

Use this timeline to discover how the economic climate has changed over time.

Take a closer look at the "Big Muddy" and all its peculiarities. Learn about the personality of the Missouri River from the days of Lewis and Clark up to today.

Take a virtual field trip with "Energy Ant" as he visits Hoover Dam. Discover when it was made, how big it actually is as well as take a trip to view the giant generators.

Heinrich Schliemann is briefly mentioned as part of a larger discussion about the geology of gold. A brief history of the precious metal refers to the gravesites discovered by Schliemann at the ancient city of Mycenae in Greece.

An exploration of the binary system using U.S. postal zip codes. Discover what numbers the long and short bars in a zip code represent in this one page activity from the NCTM Math Challenges for Families collection.

Students will take a surprise trip around the world. As they travel, they will use clues to discover where they are going. They will then figure out how much money they have spent in U.S. dollars, using exchange rates.

In this lesson, introduce your students to the world of maps and discover a world of information online. Students learn how to identify different types of maps, comparing maps to the rooms of a house.

Take a look at this extensive collection from John Kennedy's presidency. Among many events, discover history of Bay of Pigs, Civil Rights Movement, and the U.S. Physical Fitness Program.

View the artwork for a U.S. postage stamp issued in 1983 to commemorate Joseph Priestley, the scientist who discovered oxygen. With a short passage on his contributions to the teaching of history, religion, and science.

Discover how the mail moves across the country, learn how it was delivered before cars and other modes of transportation, and take a look at the history of the postage stamp. Games, lesson plans, curricular units and online murals are...

The bombing of the U.S. Marine barracks in Lebanon in 1983 was a major terrorist incident. Discover facts about this deadly event from Wikipedia encyclopedia.

What's a bean hole bean? What is the closest U.S. port city to Europe? Discover the answers to these questions and more from this Library of Congress fun-fact article.

[Free Registration/Login Required] An informational text about the different types of homes lived in by Native Americans throughout America. A question sheet is available to help students build skills in reading comprehension.

So, you're interested in becoming a civil engineer, builder, or landscaper? Then you'll need to sharpen your skills in measuring slope. Try this math challenge where you will discover how to measure the steepness of an incline.

Visit an example-rich exploration of poster art and learn how famous faces have been used to convey meanings and messages across the decades. An excellent resource for discovering how art can be a window into a particular time, Ballyhoo!...

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...