Unit 8, Lesson 1
Find the Greatest Product
Grade 5
Preparation
Lesson Purpose
The purpose of this lesson is for students to recognize and explain place-value patterns as they find products using the standard algorithm they learned in Unit 4.
Lesson Narrative
In previous units, students learned the standard algorithm for multiplying whole numbers. In this lesson, students compare and contrast different products that can be made with the same set of 3 or 4 digits. Students look for patterns in the arrangement of the digits and explain those patterns in terms of place value. For example, students might notice that the product of 2 two-digit numbers results in a greater product than that of a three-digit number and 1 one-digit number.
If students need additional support with the concepts in this lesson, refer back to Unit 4, Section A in the curriculum materials.
- Action and Expression
- MLR8
- Justify (orally and in writing) why a product of two numbers formed from a given set of digits is as large as possible.
- Let’s look for patterns when we multiply multi-digit numbers.
Required Preparation
None
Suggested Centers
NoneTeacher Reflection Questions
What did you learn about students' understanding of the standard algorithm for multiplication during the lesson today? How can you use what you learned to support students in tomorrow's lesson?
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