Lesson 20

Estrategias para dividir

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

  • Usemos diferentes estrategias para dividir.

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.

CCSS Standards

Addressing

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 pdf docx
Lesson Cover Page pdf docx
Cool Down Log In
Teacher Guide Log In
Teacher Presentation Materials pdf docx
Blackline Masters zip