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![American History Museum Collections](https://webarchive.library.unt.edu/eot2008/20090305050301im_/http://www.si.edu/Encyclopedia_SI/images/100_60_scienceandmath.jpg) |
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Collections related to the history of science and technology
in America and how this history has shaped the American identity |
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![On Time](https://webarchive.library.unt.edu/eot2008/20090305050301im_/http://www.si.edu/images/50_50_teach_science_molecul.jpg) |
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Mirror
Molecules ![](https://webarchive.library.unt.edu/eot2008/20090305050301im_/http://www.si.edu/Encyclopedia_SI/images/kid_icon.gif)
Contains activities intended for school children, grades
5 and up, under adult supervision |
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The Soviet Union launched Sputnik, the first artificial
satellite to orbit the earth. This remarkable technical
achievement encouraged reforms in mathematics and science
teaching in the United States |
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Images of twentieth-century electrical devices |
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![Slates, Slide Rules and Software: Teaching Math in America](https://webarchive.library.unt.edu/eot2008/20090305050301im_/http://www.si.edu/exhibitions/images/50_50_nmah-slatesslides.jpg) |
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Objects used to help students master abstract mathematical
concepts |
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Features a selection of over 300 objects relating to surveying
and geodesy |
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Clocks
and Watches
Selected resources |
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![On Time](https://webarchive.library.unt.edu/eot2008/20090305050301im_/http://www.si.edu/images/50_50_nmah_ontime.jpg) |
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The changing ways Americans have measured, used and thought
about time during the past 300 years |
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![The Quartz Watch](https://webarchive.library.unt.edu/eot2008/20090305050301im_/http://www.si.edu/exhibitions/images/50_50_nmah-quartz.jpg) |
![](https://webarchive.library.unt.edu/eot2008/20090305050301im_/http://www.si.edu/images/t.gif) |
The
Quartz Watch
Discover the fascinating stories behind the invention
of the quartz watch |
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