Proportion at work
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Introduces ratio and proportion as timesaving tools permitting problem solving by indirect measurement; and illustrates a typical problem through the work of two fish and game men as they compute the number of trout per square acre in a pond. Explains that ratio is a fraction that shows the relationship between two numbers, the symbols for stating a fraction, and how to express a fraction as a ratio. States the principle that "the product of the means is equal to the product of the extremes," shows multiplication, and presents simplification by division. Techniques for gaining data about the fish are presented in detail.
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, Introduces ratio and proportion as timesaving tools permitting problem solving by indirect measurement; and illustrates a typical problem through the work of two fish and game men as they compute the number of trout per square acre in a pond. Explains that ratio is a fraction that shows the relationship between two numbers, the symbols for stating a fraction, and how to express a fraction as a ratio. States the principle that "the product of the means is equal to the product of the extremes," shows multiplication, and presents simplification by division. Techniques for gaining data about the fish are presented in detail.NOTE: Two (or more) records have been merged together to create this data.
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