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Grade Range:
K-12
Resource Type(s):
Artifacts, Primary Sources
Date Posted:
5/11/2012
In 1794, Eli Whitney patented a new kind of cotton gin. His invention, using rotating brushes and teeth to remove the seeds from cotton, was quickly pirated by others. Southern plantation owners depended on slaves for labor-intensive crops such as rice, sugar, tobacco, and especially cotto
Grade Range:
5-12
Resource Type(s):
Artifacts, Primary Sources
Date Posted:
12/23/2010
Badge from the Pennsylvania GAR (Grand Army of the Republic) veterans group’s semiannual encampment on the 25th anniversary of the Battle of Gettysburg.
Grade Range:
3-12
Resource Type(s):
Interactives & Media
Date Posted:
6/10/2008
This activity will help students understand how polio affected the lives of Americans throughout the 20th century. By viewing the animated Lifecycle of the Polio Virus, students will learn how the poliovirus begins the infection process. This game is part of the online exhibition,
Grade Range:
6-12
Resource Type(s):
Reference Materials
Date Posted:
9/8/2008
Students will explore the importance of the system of checks and balances, Congress, the Supreme Court, impeachment, public opinion and the press in restricting the power of the president in this section of the online exhibition The American Presidency: A Glorious Burden.
Grade Range:
5-12
Resource Type(s):
Reviewed Websites
Date Posted:
7/7/2008
This partner reviewed site provides visitors with access to information about Puerto Rican arts and culture. This information is presented in Spanish. El Museo de Arte de Puerto Rico (MAPR) is a Smithsonian Affiliate Museum.  
Grade Range:
4-12
Resource Type(s):
Reference Materials, Primary Sources
Date Posted:
5/27/2009
This interactive collection search contains objects that are featured in the exhibition On the Water: Stories from Maritime America. Representing a broad sweep of American maritime history, these objects were collected over more than a century and reflect broad patterns of technological,
Grade Range:
K-12
Resource Type(s):
Reviewed Websites
Date Posted:
10/7/2008
POTUS.com consists of detailed biographies of every president from George Washington to George W. Bush. Each president has a comprehensive individual section devoted to them specifically. In each section teachers and students can find a great deal of information about the [residents, inc
Grade Range:
K-12
Resource Type(s):
Artifacts, Primary Sources
Date Posted:
3/9/2009
This silver teapot was made by Samuel Casey of Little Rest (later Kingston, R.I.), about 1750, for Abigail Robinson, probably about the time of her marriage to John Wanton of Newport, R.I., in 1752. Shaped like an inverted pear, the teapot has silver feet and a wooden finial. The wooden handle is
Grade Range:
K-4
Resource Type(s):
Reference Materials, Lessons & Activities
Date Posted:
4/2/2009
Students Sit for Civil Rights is an OurStory module that includes activities based on reading Freedom on the Menu, a work of children's literature about the Greensboro sit-ins that played an important role during the civil rights movement. OurStory is a series
Grade Range:
K-12
Resource Type(s):
Artifacts, Primary Sources
Date Posted:
12/31/2009
In the early days of electronic computers, memory was not as efficient or inexpensive as it is today. To save memory space, programs stored as few digits as possible for dates. In COBOL, for instance, January 1, 1999, was stored as 010199. As Year 2000, or Y2K for short, approached, it became app
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