Lesson 5
Restemos con objetos
Lesson Purpose
Lesson Narrative
In previous lessons, students represented addition by putting 2 groups of objects together or adding more objects. In this lesson, students represent the action of subtraction with objects. Students take away a number of objects and determine the number of objects remaining. The language of “quitar” // “take away” and “restar” // “subtract” is introduced by the teacher throughout the lesson. Students are not expected to produce this language in this lesson. The notation “_____ quitando _____?” // “_____ take away _____” is also introduced. Students need time to see and hear the teacher use this language before they can understand expressions “_____ - _____”, which are introduced in a later section.
- Representation
- MLR8
Learning Goals
Teacher Facing
- Use objects to show the action of subtraction.
Student Facing
- Usemos fichas para restar.
Required Materials
Materials to Gather
Materials to Copy
- Number Mat 1–5
Required Preparation
Activity 2:
- Each group of 2 needs 1 connecting cube.
Activity 3:
- Gather materials from:
- 5-Frames, Stages 1 and 2
- Roll and Add, Stage 1
- Math Libs, Stage 1
- Match Mine, Stage 1
Lesson Timeline
| Warm-up | 10 min |
| Activity 1 | 10 min |
| Activity 2 | 10 min |
| Activity 3 | 25 min |
| Lesson Synthesis | 5 min |
| Cool-down | 0 min |