Instructional module focusing on the metric system. Discussion includes the historical development of the system and an explanation of base units. Site also includes an interactive practice quiz and links relating to the topic.

This site provides history and information about the Statue, including information about visiting, the statistics and measurements of the Lady, and historical background of France/U.S. relations. Be sure to click on the "Handbook" link...

This resource provides historic information on length measurement in the United Kingdom. Click on the topics on the left toolbar of the article to find out more information.

This site from the encyclopedia Wikipedia gives the reader excellent insight into the United States economy. Includes historical references, the influence of technology, resources, and the role of government. Includes numerous charts and...

A map skills exercise from 1872 showing the drawing of the United States with proportional measurements. The map shows state and territory boundaries at the time (Dakota, Montana, Washington, Idaho, Wyoming, Utah, Oklahoma, New Mexico,...

A plan of Pittsburgh from 1903 showing principal streets, railroads and stations, bridges, and landmarks. "Pittsburgh, the second largest city of Pennsylvania, and the leading iron, steel, and glass manufacturing center of the United...

A map from 1868 of the United States showing physical features, mean annual temperatures, rainfall distribution, watersheds, and principal products in the area. The average annual temperatures are shown by isotherms, with temperatures...

Described as "principal structure associated with the history of weather observation" in the United States, this observatory is home to the oldest continuous weather record in North America, and is where numerous meteorological...

Using the skills of a paleontologist, students are asked to match up lecturers with what day and time they teach, and how many students they have based on clues given from several different perspectives. In the second part of the...

A map of the United States in 1854 showing the results of the test-vote on the Kansas-Nebraska Bill in the House of Representatives, which would repeal the Missouri Compromise of 1820 and allow territorial settlers to determine if...

Through eight lessons, students are introduced to many facets of dams, including their basic components, the common types (all designed to resist strong forces), their primary benefits (electricity generation, water supply, flood...