Lesson 9
The Birds
Lesson Purpose
The purpose of this lesson is for students to use whole-number
multiplication to solve problems.
Lesson Narrative
In previous lessons, students learned to use the standard algorithm to
multiply multi-digit numbers. In this lesson, they solve problems that involve multiplication.
Students are not asked to use a particular algorithm when they solve these problems. Some of the
numbers in the problems are large and cumbersome and lend themselves well to using the standard
algorithm for multiplication. Other products have factors of 10 and other smaller factors and
these lend themselves well to mental calculations or use of the associative and commutative
properties of multiplication. Use this lesson as an opportunity to observe the strategies your
students are applying.
- Action and Expression
- MLR1
Learning Goals
Teacher Facing
-
Solve problems that involve the multiplication of multi-digit numbers.
Student Facing
- Let’s solve multiplication problems.
Required Preparation
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
If you were to teach this lesson over again, what activity would you redo?
How would your proposed changes support student learning?
Suggested Centers
- Number Puzzles: Multiplication and Division (4–5), Stage 2: Multi-digit Factors (Addressing)