Lesson 28
Alrededor del salón (optional)
Lesson Purpose
The purpose of this lesson is for students to write and solve their own story problems involving addition and subtraction.
Lesson Narrative
This lesson is optional because it does not address any new mathematical content standards. This lesson does provide students with an opportunity to apply precursor skills of mathematical modeling. In this lesson, students use objects in their classroom to create story problems and equations. When students ask mathematical questions that arise from a situation and use mathematical features of a situation to solve a problem, they model with mathematics (MP4).
- Representation
- MLR7
Learning Goals
Teacher Facing
- Add within 20 with three addends.
- Write and solve story problems.
Student Facing
- Escribamos problemas-historia de suma y de resta.
Required Materials
Required Preparation
Lesson Timeline
| Warm-up | 10 min |
| Activity 1 | 20 min |
| Activity 2 | 10 min |
| Activity 3 | 10 min |
| Lesson Synthesis | 10 min |
Teacher Reflection Questions
What part of the lesson went really well today in terms of students’ learning? What did you do that made that part go well?