Lesson plan

Compare across customary and metric units by describing how the number of units changes as the size of the unit changes

teaches Common Core State Standards CCSS.Math.Content.2.MD.A.1 http://corestandards.org/Math/Content/2/MD/A/1
teaches Common Core State Standards CCSS.Math.Content.2.MD.A.2 http://corestandards.org/Math/Content/2/MD/A/2
teaches Common Core State Standards CCSS.Math.Practice.MP2 http://corestandards.org/Math/Practice/MP2
teaches Common Core State Standards CCSS.Math.Practice.MP3 http://corestandards.org/Math/Practice/MP3
teaches Common Core State Standards CCSS.Math.Practice.MP5 http://corestandards.org/Math/Practice/MP5

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Big Ideas: Measurements can be compared by their relative values. The number of units changes as the size of the unit changes. The lesson builds on students' work with measuring in customary and metric units. This task asks students to measure objects in metric and customary units. Students are then asked to compare and explain the difference between metric and customary units. The mathematical concepts in this lesson build towards students future work with determining difference in length measures. Vocabulary: about, a little less than, a little more than, longer, shorter, measure, standards units, units, customary, metric, inch, foot, centimeter, tools, ruler, meter, centimeter, yardstick, meter stick, measuring tape, estimate, sums, differences Special Materials: ruler yardstick meter stick measuring tape color tiles - 1 inch centimeter cubes