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K12 Reader
The Metric System
How did the metric system come to be, and why does the US not use it very much? Your class can learn the answers to these questions with the reading passage included here and then respond to the five related questions.
American Chemical Society
Norbert Rillieux, Thermodynamics and Chemical Engineering
The man who invented the earliest examples of chemical engineering was an American-born, French-educated, free man of color before the Civil War, and went on to translate Egyptian hieroglyphics. There is something of...