Lesson plan

Understand the distributive property of multiplication by breaking numbers apart

teaches Common Core State Standards CCSS.Math.Content.3.MD.C.7c http://corestandards.org/Math/Content/3/MD/C/7/c
teaches Common Core State Standards CCSS.Math.Content.3.OA.B.5 http://corestandards.org/Math/Content/3/OA/B/5

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Big Ideas: Factors can be broken apart into smaller parts (distributive property) in order to get the same product by adding the two smaller products together. This lesson continues to build on students’ knowledge of multiplication and how to represent multiplication in arrays, equal rows and columns. Students build arrays when starting to solve multiplication problems prior to memorizing their facts. In the previous lesson students learned how to break apart factors using arrays as a visual. In this lesson students will learn how to break apart factors into smaller parts when they come across unfamiliar facts. Students will look at various ways to represent a multiplication problem by breaking factors apart. The mathematical concepts in this lesson build towards students’ future work with multiplying and dividing larger numbers using multiple strategies. Vocabulary: factors, product, distributive property