Unit 4, Lesson 14# Represent decomposition and composition addition stories to 7 with drawings and equations with no unknown.

EngageNY 60 min(s)

In this lesson, students represent addition story problems to 7, involving decomposition and composition, modeling with A + B = C and C = A + B. First, students write the number sentence. Then they play several rounds of the game Snap to create different number sentences for 7.