Unit 4, Lesson 21, Grade 2 icon
Unit 4, Lesson 21

Use math drawings to represent additions with up to two compositions and relate drawings to a written method

EngageNY 60 min(s)

In this lesson, students develop conceptual understanding of the algorithm when there are two compositions. Students relate their drawings to the vertical form, recording each change they make to their model on the numerical representation to build proficiency. They use place-value language to explain these changes.

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