Unit 5
Multiplicative Comparison and Measurement
Unit Goals
Unit Narrative
In this unit, students make sense of multiplication as a way to compare quantities. They use this understanding to solve problems about measurement.
In earlier grades, students related two quantities and made an additive comparison, where the key question was “How many more?” Here they make a multiplicative comparison, in which the underlying question is “How many times as many?” For example, if Mai has 3 cubes and Tyler has 18 cubes, we can say that Tyler has 6 times as many cubes as Mai does.
Initially, students reason, using...
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