Description
Topic D builds upon the work students completed in Module 2 with centimeter units, as students now explore measurement using both customary and metric units. In Lesson 16, students rotate through various centers and measure a variety of objects with inch rulers and yardsticks, strategically choosing the appropriate measurement tool and units for measuring a given object (2.MD.1). Next, in Lesson 17, students deepen their measurement sense by applying their experiences in Lesson 16 to estimating the lengths of different objects and then checking their estimates by measuring (2.MD.3). Then, in Lesson 18, students measure the same objects twice, using both metric and customary units. Finally, students compare different lengths using addition and subtraction in Lesson 19. The work with measurement tools and various length units in Topic D lays the groundwork for problem solving in Topic E, as students use the more abstract tape diagram to relate addition and subtraction to length.
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Credits
From EngageNY.org of the New York State Education Department. Grade 2 Mathematics Module 7, Topic D.
Available from engageny.org/resource/grade-2-mathematics-module-7-topic-d; accessed 2015-05-29.
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