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Grade Range:
K-12
Resource Type(s):
Artifacts, Primary Sources
Date Posted:
11/6/2008
During World War I, machine guns were heavy, crew-served weapons. Their operation required several soldiers. Even so-called light machine guns could not easily be handled by single soldiers. To meet the need for an individual rapid-fire weapon, several inventors devised submachine guns. Light eno
Grade Range:
K-12
Resource Type(s):
Artifacts, Primary Sources
Date Posted:
11/5/2008
From the 1920s, psychologists have explored ways to automate teaching. In the 1950s, the psychologist B. F. Skinner of Harvard University suggested that techniques he had developed for training rats and pigeons might be adopted for teaching humans.
Grade Range:
K-12
Resource Type(s):
Artifacts, Primary Sources
Date Posted:
11/4/2008
After graduating from the University of Wisconsin, Charles W. Hart and Charles H. Parr developed a two-cylinder gasoline engine and set up their business in Charles City, Iowa. In 1903 the firm built fifteen tractors (a term coined by Hart and Parr), and the 14,000 pound #3 is the oldest survivin
Grade Range:
K-12
Resource Type(s):
Artifacts, Primary Sources
Date Posted:
11/4/2008
The John Deere Model D tractor was introduced in 1923 and became the first tractor built, marketed, and named John Deere. It replaced the Waterloo Boy in the company's product line.
Grade Range:
K-12
Resource Type(s):
Artifacts, Primary Sources
Date Posted:
11/4/2008
This is a patent model of a sewing machine invented by John Bachelder of Boston, Mass., who was issued Patent No. 6439 on May 8, 1849. In his patent specification he claims "As my invention or improvement in the sewing machine is the combination, with the endless cloth-holder, of the curved bar o
Grade Range:
9-12
Resource Type(s):
Primary Sources, Lessons & Activities
Date Posted:
9/10/2008
This online exhibition explores the role of transportation in American history. Students will learn about communities wrestling with the changes that new transportation networks brought; how cities change, suburbs expand, and farms and factories become part of regional, national and international
Grade Range:
9-12
Resource Type(s):
Reference Materials
Date Posted:
7/7/2008
Students can learn the century-long history of grass-roots invention in American automobile racing. This reference page is included in the online exhibition entitled America on the Move, which focuses on transportation in US history.
Grade Range:
9-12
Resource Type(s):
Reference Materials
Date Posted:
7/7/2008
Students can learn more about American railroads during the 20th century. This reference page is included in the online exhibition entitled America on the Move, which focuses on transportation in US history.
Grade Range:
9-12
Resource Type(s):
Reference Materials, Primary Sources, Lessons & Activities
Date Posted:
7/7/2008
In this online reference page, students can learn how public transportation shaped the development of Chicago. This resource is included in the online exhibition entitled America on the Move, which focuses on transportation in US history.
Grade Range:
9-12
Resource Type(s):
Reference Materials
Date Posted:
7/7/2008
Students can learn about the history of the sugarcane industry in Hawaii by exploring how the Olomana, a plantation locomotive, was used to serve the fields. This reference page is included in the online exhibition entitled America on the Move, which focuses on transportation in
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