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Lesson Plan

Compare and convert customary units of weight by creating conversion tables

teaches Common Core State Standards CCSS.Math.Content.4.MD.A.1
teaches Common Core State Standards CCSS.Math.Practice.MP7
teaches Common Core State Standards CCSS.Math.Practice.MP8
teaches Common Core State Standards CCSS.Math.Content.4.OA.A.1
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Big Ideas: The same measurement value can be represented in multiple ways (e.g. 2 pounds = 32 ounces) Units of measurement can be compared by their relative values Multiplicative comparisons show the relationship between units of measurement (1 pound is 16 times as much as 1 ounce, 1 foot is 12 times as much as 1 inch) In this lesson, students continue to create conversion tables with a focus on customary measures of weight. In third grade, students practiced measuring mass with metric units; in this lesson they refer to benchmark objects identified in Lesson 1 to understand the relationship between the customary units of pounds and ounces. Conversion tables will also be used to reinforce the multiplicative comparison of two units of measurement. Vocabulary: pound, ounce
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