Lesson plan

Critique models representing unit fractions by identifying, correcting, and explaining the errors

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.2a http://corestandards.org/Math/Content/3/NF/A/2/a
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
teaches Common Core State Standards CCSS.Math.Practice.MP6 http://corestandards.org/Math/Practice/MP6

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Big Ideas: Fractions can be modeled in multiple ways. When modeling fractions, the whole must be partitioned into the number of equal parts indicated by the denominator. In this lesson, students will draw on what they have learned about partitioning number lines and shapes into 2, 3, 4, 6, or 8 equal regions or parts. This task focuses on students using their knowledge of equal parts to identify mistakes made in problems and correct those mistakes. This builds toward students’ future work with multiple representations of fractions in grades 3-5. Vocabulary: partition, unit fraction, area model, number line, numerator, denominator, whole