Description
Introduces the mathematical concept of proportions by using examples of the money and time used to build the transcontinental railroad, and provides a brief history of the railroad and its impact upon the United States.
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This book follows the creation of the Transcontinental railroad, and uses historical examples to illustrate and challenge readers into solving problems using proportions. Includes detailed maps, black-and-white photographs of the railroad construction, and portraits of figures who were instrumental in support and creation of the railroad.
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