Lesson 9
Resolvamos problemas-historia
Lesson Purpose
The purpose of this lesson is for students to solve story problems in a way that makes sense to them and to understand how objects and drawings represent a story problem.
Lesson Narrative
In a previous lesson, students were introduced to story problems with questions. In this lesson, students represent and solve the story problems. They may use objects, math tools, or drawings. Students explain how both objects and drawings show what is happening in a story problem, which will be useful as students create their own representations and interpret other representations in future lessons.
- Representation
- MLR8
Activity 1: Marcadores en la escuela
Learning Goals
Teacher Facing
- Solve Add To, Result Unknown and Take From, Result Unknown story problems, including problems with a result of 0.
Student Facing
- Veamos diferentes formas de mostrar lo que ocurrió en un problema-historia.
Required Materials
Materials to Gather
Materials to Copy
- Math Fingers Stage 3 Recording Sheet
Required Preparation
Activity 3:
- Gather materials from:
- Math Stories, Stages 1 and 2
- Subtraction Towers, Stage 1
- 5-frames, Stages 1 and 2
- Build Shapes, Stages 1 and 2
- Counting Collections, 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 |
Teacher Reflection Questions
Which students had opportunities to share their work and thinking during whole-class discussion? How did you select these students?