Unit 8, Lesson 10
Multiplicación y división
Grado 3
Preparation
Lesson Purpose
The purpose of this lesson is for students to use a variety of representations to illustrate the relationship between multiplication and division as a means to develop fluency with division within 100.
Lesson Narrative
In previous units, students learned the meanings of multiplication and division, and understood division as an unknown-factor problem. They have worked to develop fluency with multiplication within 100. In this lesson, they continue that work by reinforcing their understanding of the relationship between multiplication and division.
In the first activity, students are given a card with an equation or a diagram and asked to find another student whose card represents the same situation or quantities. Then they create an additional diagram and a situation that matches their division equation. Students then view and compare the diagrams and the situations that their classmates created in a Gallery Walk.
If students need additional support with the concepts in this lesson, refer back to Unit 4, Section B in the curriculum materials.
- Engagement
- MLR7
- Create and present (using words and other representations) division equations, diagrams, and word problems that represent the same relationships.
- Match (orally) division equations and diagrams or multiplication equations with an unknown factor that represent the same equal groups.
- Representemos grupos iguales y escribamos situaciones de grupos iguales.
Required Materials
Activity 1
Activity 2
Required Preparation
Activity 1
- The blackline master has 24 cards. Copy and cut enough cards so that each student can have 1 card.
Activity 2
- Keep posters from the previous activity displayed.
Suggested Centers
NoneTeacher Reflection Questions
What did you say, do, or ask during the Lesson Synthesis that helped make clear the learning of the day to students? How did previewing the Cool-down of the lesson help you synthesize student learning?
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