Lesson Plan

Compose a fraction with the area model by joining unit fractions

teaches Common Core State Standards CCSS.Math.Content.3.G.A.2 http://corestandards.org/Math/Content/3/G/A/2
teaches Common Core State Standards CCSS.Math.Content.3.NF.A.1 http://corestandards.org/Math/Content/3/NF/A/1
teaches Common Core State Standards CCSS.Math.Practice.MP1 http://corestandards.org/Math/Practice/MP1
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

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Big Ideas: A fraction can be generated by composing the unit fractions. The denominator is the total number of equal shares in a whole and the numerator is the number of parts represented. This lesson builds on students’ work with partitioning area models and number lines into equal shares. This task uses a scenario at a farm where students will be naming, creating, and completing fractions of gardens by composing unit fractions. Students will combine unit fractions to name fractions and gain a deeper understanding of the numerator and denominator. The mathematical concepts in this lesson build toward students’ future work with naming and decomposing fractions, comparing fractions, and equivalent fractions. Vocabulary: fraction, unit fraction, numerator, denominator
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