EngageNY 60 min(s)

In this lesson, students draw arrays and pairs of tape diagrams to model the commutative property of multiplication. For example, they draw an array with 2 rows of 4 to represent 2 × 4, rotate it 90 degrees to represent 4 × 2, and then draw a tape diagram to represent each fact. This lesson focuses on multiplication involving units of 4 in order to build fluency with those facts.