Unit 3, Lesson 20
A Trip to the Zoo
Grade 1
Preparation
Lesson Purpose
The purpose of this lesson is for students to solve story problems with three addends.
Lesson Narrative
In this lesson, students solve story problems that call for addition of three numbers. Students solve the problems in any way that makes sense to them. Students may work flexibly with different methods based on the numbers they are adding.
- Action and Expression
- MLR6
- Explain (orally) strategies for solving Put Together/Take Apart, Total Unknown problems with three addends.
- Let’s solve story problems.
Required Materials
Required Preparation
None
Suggested Centers
NoneTeacher Reflection Questions
What student thinking was made “visible” through representations and discussion today? What thinking was still “invisible?” How might you make that thinking “visible” in future lessons?
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