Lesson 9
All of the Story Problems
Lesson Purpose
The purpose of this lesson is for students to solve addition and subtraction story problems.
Lesson Narrative
In a previous unit, students solved Add To, Result Unknown and Take From, Result Unknown story problems. In previous lessons, students solved Put Together, Total Unknown and Put Together/Take Apart, Both Addends Unknown story problems. In this lesson, students solve familiar types of story problems. Because the types of story problems are mixed, students need to make sense of what the story is asking them to do (MP1). Then, students create their own story problem.
- Representation
- MLR7
Learning Goals
Teacher Facing
- Solve addition and subtraction story problems.
Student Facing
- Let’s solve story problems.
Required Materials
Materials to Gather
Required Preparation
Activity 3:
- Gather materials from:
- What’s Behind My Back, Stage 1
- 5-frames, Stages 1 and 2
- Make or Break Apart Numbers, Stage 1
- Math Stories, Stages 1–3
Lesson Timeline
| Warm-up | 10 min |
| Activity 1 | 15 min |
| Activity 2 | 15 min |
| Activity 3 | 15 min |
| Lesson Synthesis | 5 min |
| Cool-down | 0 min |
Teacher Reflection Questions
Unlike talking, listening is a difficult thing to observe. At what points in the lesson did you observe students listening to one another’s ideas today in class? What indicators do you have that they were listening?