This intricate handmade lace baby cap dates from the turn of the 20th century and was probably worn for a baby's chri
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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
