Lesson plan

Apply knowledge of unit conversions to solve multi-step problems involving small distances in the standard system by using visual models and equations

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.B.4 http://corestandards.org/Math/Content/4/NBT/B/4
teaches Common Core State Standards CCSS.Math.Practice.MP1 http://corestandards.org/Math/Practice/MP1
teaches Common Core State Standards CCSS.Math.Practice.MP3 http://corestandards.org/Math/Practice/MP3
teaches Common Core State Standards CCSS.Math.Practice.MP4 http://corestandards.org/Math/Practice/MP4

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Big Ideas: We can represent the different applications of addition/subtraction (combining, separating, part-part-whole, and analyzing relationships) using bar diagrams, number lines, etc. We can express equivalent measurements given in larger units in terms of smaller units by using multiplication. In this lesson students will be expected to make a comparison between three different heights. The heights are given in different units so the students will need to apply their knowledge of converting from feet to inches (a multiplicative comparison) in order to transform the values to like-units which can be compared. Vocabulary: convert, factor, product, inches, feet, yards, multiplicative comparison Special Materials: ruler with customary units yardstick (optional)