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Lesson Plan

Solve multiplicative comparison word problems by converting from a larger to a smaller metric unit

teaches Common Core State Standards CCSS.Math.Content.4.MD.A.2 http://corestandards.org/Math/Content/4/MD/A/2
teaches Common Core State Standards CCSS.Math.Content.4.NBT.A.3 http://corestandards.org/Math/Content/4/NBT/A/3
teaches Common Core State Standards CCSS.Math.Practice.MP2 http://corestandards.org/Math/Practice/MP2
teaches Common Core State Standards CCSS.Math.Practice.MP4 http://corestandards.org/Math/Practice/MP4
teaches Common Core State Standards CCSS.Math.Content.4.OA.A.2 http://corestandards.org/Math/Content/4/OA/A/2
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Big Ideas: Numbers, expressions, and measures can be compared by their relative values. Conversion from a larger unit to a smaller unit is a multiplicative comparison. A larger unit is a specified number of times larger than a smaller unit. This lesson builds on students' understanding of the relative sizes of units within a single system of measurement as well as their understanding of multiplicative comparison. The task asks students to compare jump lengths given in different units. Students will use various strategies to convert to a common unit in order to compare the jumps. This lesson builds toward solving multiplicative comparison word problems with the unknown in any position. Vocabulary: multiplicative comparison, factor, product, two-column chart, per, iteration, unit, metric measurement system Special Materials: measuring tools, graph paper, linking cubes, base ten blocks
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