Lesson 5
Represent Products as Areas
Lesson Purpose
Lesson Narrative
In previous lessons, students counted unit squares to find the area of rectangles. In this lesson they explicitly connect multiplication to rectangular areas. Students match multiplication expressions to rectangular areas, specifically relating the factors of the expressions to the rows and columns of squares in the rectangle. Then, students are given multiplication expressions and create matching rectangles with inch tiles and drawings on grids.
- Engagement
Activity 1: Match Expressions and Areas
Learning Goals
Teacher Facing
- Relate multiplication to finding the area of rectangles.
Student Facing
- Let’s connect multiplication expressions to area.
Required Materials
Required Preparation
CCSS Standards
Addressing
Lesson Timeline
| Warm-up | 10 min |
| Activity 1 | 15 min |
| Activity 2 | 20 min |
| Lesson Synthesis | 10 min |
| Cool-down | 5 min |
Teacher Reflection Questions
In previous lessons students worked with arrays as a way to represent multiplication. How did students’ previous work with arrays support them in representing products as rectangular areas?
Suggested Centers
- Capture Squares (1–3), Stage 6: Multiply with 1–5 (Addressing)
- Rectangle Rumble (3–5), Stage 1: Factors 1, 2, 5, and 10 (Addressing)
Print Formatted Materials
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Additional Resources
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