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Grade Range:
5-12
Resource Type(s):
Reference Materials
Date Posted:
10/11/2009
Explore the process of invention and compare Thomas Edison's well-known work on the electric light bulb a century ago with several modern lighting inventions with this online activity. This resource looks at the process of innovation through a sequence of five steps: prec
Grade Range:
9-12
Resource Type(s):
Reference Materials
Date Posted:
3/18/2009
America's worst accident at a civilian nuclear power plant occurred on March 28, 1979. This online exhibition provides information about the Three Mile Island nuclear power plant, the course of the accident there and the steps-extending over almost 15 years-through which the nature and extent of
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