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History Explorer Results (16)
Related Books (3)
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Resource Type(s):
Reference Materials
Date Posted:
9/4/2020
“"It was now quick work," Maria Mitchell noted. "As the last rays of sunlight disappeared, the corona burst out all around the sun, so intensely bright near the sun that the eye could scarcely bear it." Maria Mitchell brought a team of Vassar graduates—"Vassar girls" as the press called
Grade Range:
K-12
Resource Type(s):
Artifacts
Date Posted:
4/16/2018
The glass ballot jar became a symbol of democratic self-government. This 1884 glass ballot jar is typical of the transparent devices used to secure paper ballots.
Grade Range:
K-12
Resource Type(s):
Artifacts
Date Posted:
4/7/2016
Invention rarely stops when the inventor introduces a new device. Thomas A. Edison and his team worked to improve his electric lighting system for some years after the initial introduction in 1880. This lamp shows the changes made after six years of labor aimed at lowering costs and increasing pr
Grade Range:
K-12
Resource Type(s):
Artifacts
Date Posted:
4/4/2016
This Coca-Cola bottle from 2002 contains brown liquid inside that it sealed with a metal cap. The greenish glass is marked with a painted Coca-Cola logo around the middle, repeated twice. On one side, a barcode is placed next to the image of a Coca-Cola bottle with condensation over it, and under
Grade Range:
6-12
Resource Type(s):
Artifacts, Primary Sources
Date Posted:
5/23/2014
This robot was constructed in 1987 by Dr. Kenneth Kinzler and his colleagues at the Johns Hopkins Oncology Center's Molecular Genetics Lab run by Dr. Bert Vogelstein. It was used to conduct PCR in research on the p53 gene, which is linked to 50 percent of human cancers. Polymerase chain reaction,
Grade Range:
8-12
Resource Type(s):
Interactives & Media
Duration:
45 minutes
Date Posted:
2/11/2013
In this webcast, a historian of 19th century slavery and slave literature, the Ambassador of the Office to Monitor and Combat Trafficking in Persons at the US Department of State, the great-great-great grandson of Frederick Douglass, and a high school student activist joined together with high sc
Grade Range:
K-12
Resource Type(s):
Artifacts
Date Posted:
11/7/2012
This ambrotype portrait of Mea-to-sa-bi-tchi-a, or Smutty Bear, a Yankton Dakota, is among the first photographic images of Native Americans. Smutty Bear was part of a large Native American delegation that came to Washington, D.C., during the winter of 1857–58. Under duress, members of the dele
Grade Range:
1-6
Resource Type(s):
Lessons & Activities
Duration:
10 minutes
Date Posted:
8/30/2012
People have been turning kitchens into bubble labs for hundreds of years. Benjamin Franklin and his mentor James Logan studied the optical properties of bubbles. These experiments later contributed to Franklin’s invention of bifocal glasses in 1784. Discover your inner bubble inventor
Grade Range:
8-12
Resource Type(s):
Interactives & Media, Lessons & Activities
Duration:
135 minutes
Date Posted:
8/3/2012
In this lesson, students will examine the difference between history and memory by debating the legacy of John Brown.  Using video clips of an actor playing Brown, students are invited to debate his actions and determine how history should remember him.  The video segments are also avai
Grade Range:
5-12
Resource Type(s):
Reference Materials
Date Posted:
8/9/2011
On Time explores the changing ways we have measured, used, and thought about time over the past three hundred years. With this online resource, students will learn how improvements in time keeping technology have led to the increased importance of efficiency, punctuality and regimentatio
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