The ratios used in this standard will compare like units, and students may be exposed to a number of ways to show ratios. For example, students may be given a part to whole relationship (7 boys in a class of 18 students) or a part to part relationship (11 girls and 7 boys in a class). Students need to practice with both in order to master this standard. Sometimes the multiplicative part will be included like Scott is twice as tall as Lexi. Exposing students to a variety of problem types will help them master this standard.
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6.4 Proportionality. The student applies mathematical process standards to develop an understanding of proportional relationships in problem situations. The student is expected to:
(C) give examples of ratios as multiplicative comparisons of two quantities describing the same attribute