Lesson plan

Estimate the length of an object by making a comparison to measurement benchmarks

teaches Common Core State Standards CCSS.Math.Content.2.MD.A.3 http://corestandards.org/Math/Content/2/MD/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.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: Length measurements can be estimated using appropriate known referents (benchmarks). This lesson builds on students' work with measuring with standard units. In this task students use measurement benchmarks to estimate the length or height of classroom objects. The goal is for students to make reasonable estimates. The mathematical concepts in this lesson build toward students' future work with estimation and measurement. Vocabulary: about, a little less than, a little more than, longer, shorter, measure, standards units, units, customary, metric, inch, foot, centimeter, tools, meter, centimeter, ruler, yardstick, meter stick, measuring tape, estimate, sums, differences Special Materials: ruler yardstick meter stick measuring tape centimeter cubes color tiles - 1 inch