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History Explorer Results (8)
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Grade Range:
K-12
Resource Type(s):
Artifacts
Date Posted:
1/2/2022
During the late 1950s and 1960s, American scientists and educators proposed using machines for instruction. Teaching machines and related programmed textbooks used a careful sequence of questions for teaching. Jerome C. Meyer and later William R. Hafel, both of Sunnydale, California, believed that i
Grade Range:
K-12
Resource Type(s):
Artifacts, Primary Sources
Date Posted:
5/3/2012
This apparatus was designed by Catherine Stern, a physicist by training and the founder of a Montessori school in her native Germany. Stern and her husband were of Jewish descent, and emigrated to New York City in 1938 to avoid persecution by the Nazis. There she developed these materials, descri
Grade Range:
6-12
Resource Type(s):
Interactives & Media
Duration:
2 minutes
Date Posted:
3/23/2012
Meet Steven Turner, curator at the Smithsonian's National Museum of American History, as he discusses the Smithsonian's scientific instrument collection. This video focuses on the plate developed by the 18th century scientist Chladni whose instruments create visual representations of wave pattern
Grade Range:
6-12
Resource Type(s):
Interactives & Media
Duration:
4 minutes
Date Posted:
3/23/2012
Meet Steven Turner, curator at the Smithsonian's National Museum of American History, as he discusses the Smithsonian's scientific instrument collection. This video focuses on the history of acoustics during the 18th and 19th centuries, including demonstrations of wave models, tuning forks, siren
Grade Range:
6-12
Resource Type(s):
Interactives & Media
Duration:
4 minutes
Date Posted:
3/23/2012
Meet Steven Turner, curator at the Smithsonian's National Museum of American History, as he discusses the Smithsonian's scientific instrument collection. This video focuses on instruments that showcase acoustics resonance, including tuning forks on resonator boxes, matching resonators, Helmholtz
Grade Range:
6-12
Resource Type(s):
Interactives & Media
Duration:
4 minutes
Date Posted:
3/23/2012
Meet Steven Turner, curator at the Smithsonian's National Museum of American History, as he discusses the Smithsonian's scientific instrument collection. This video focuses the science behind and uses for tuning forks, including demonstrations of tuning forks on resonators, the Grand Tonometer, a
Grade Range:
6-12
Resource Type(s):
Interactives & Media
Duration:
3 minutes
Date Posted:
3/23/2012
Meet Steven Turner, curator at the Smithsonian's National Museum of American History, as he discusses the Smithsonian's scientific instrument collection. This video focuses models used to represent the movement of sound waves, including demonstrations of wave models by Kohl, Ricky, and Crova, as
Grade Range:
K-12
Resource Type(s):
Artifacts, Primary Sources
Date Posted:
11/4/2008
This telegraph register, manufactured in accord with the Morse patent, was installed in 1848 in South Bend, reputedly the first telegraph office in Indiana. Stamped on the base is "j. Burritt & son ithaca." Pulses of electricity caused the two vertical electromagnets (on the right) to pull ag
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