Lesson 20
Strategies for Dividing
Lesson Purpose
The purpose of this lesson is for students to analyze representations and strategies for finding quotients with larger numbers and to divide within 100.
Lesson Narrative
Previously, students use base-ten blocks, diagrams, and other representations or strategies to reason about division within 100. In this lesson, they extend and formalize this work to include writing a series of equations to find the value of a quotient.
In analyzing various strategies to represent division, students reinforce their understanding of place value, properties of operations, and the relationship of multiplication and division.
- Representation
- MLR8
Learning Goals
Teacher Facing
- Analyze strategies for representing and reasoning about division.
- Divide within 100 using strategies based on place value and properties of operations.
Student Facing
- Let’s use different strategies to divide.
Required Materials
Materials to Gather
Materials to Copy
- Centimeter Grid Paper - Standard
- Compare Stage 4 Division Cards
Required Preparation
Activity 3:
- Create a set of cards from the blackline master for each group of 2. Remove the cards with two-digit divisors.
Lesson Timeline
| Warm-up | 10 min |
| Activity 1 | 15 min |
| Activity 2 | 15 min |
| Activity 3 | 10 min |
| Lesson Synthesis | 5 min |
| Cool-down | 5 min |
Teacher Reflection Questions
Who has been sharing their ideas in class lately? Make a note of students whose ideas have not been featured in class and look for an opportunity for them to share their thinking in tomorrow’s lesson.
Suggested Centers
- Compare (1–5), Stage 4: Divide within 100 (Addressing)
- How Close? (1–5), Stage 5: Multiply to 100 (Addressing)
- Can You Draw It? (1–5), Stage 2: Grade 2 Shapes (Supporting)
Print Formatted Materials
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| Student Task Statements | docx | |
| Lesson Cover Page | docx | |
| Cool Down | Log In | |
| Teacher Guide | Log In | |
| Teacher Presentation Materials | docx | |
| Blackline Masters | zip |