Lesson plan

Interpret whole-number quotients by partitioning into equal groups using counters and visuals

teaches Common Core State Standards CCSS.Math.Content.3.OA.A.2 http://corestandards.org/Math/Content/3/OA/A/2
teaches Common Core State Standards CCSS.Math.Practice.MP1 http://corestandards.org/Math/Practice/MP1
teaches Common Core State Standards CCSS.Math.Practice.MP7 http://corestandards.org/Math/Practice/MP7

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Big Ideas: The quotient in a division sentence can represent either the size of each group or the number of equal groups. Division can be defined by its inverse relationship with multiplication. This lesson builds on students’ work with multiplication and division using simpler factors. This task uses a class party design where students make decisions about groups of objects and shares as they choose party decorations. Using partitioning or repeated subtraction, students divide party supplies into either same-sized groups or same-sized shares. Students reason about the relationship between multiplication and division using counters and pictures to represent equal groups and shares. The mathematical concepts in this lesson build towards students’ understanding of a quotient. Vocabulary: quotient, equation, partition, inverse relationship Special Materials: counters