Unit 7, Lesson 5
Center Day 1 (Optional)
Grade 2
Preparation
Lesson Narrative
This lesson is optional because it is an opportunity for extra practice that not all classes may need. In Activity 1, students learn Stage 7 of the Five in a Row: Addition and Subtraction center. In this new stage, students add within 1,000, without composing. In Activity 2, students choose to continue working on Five in a Row: Addition and Subtraction, or choose between two previously introduced centers that focus on place value in three-digit numbers.
- Explain (orally) strategies for adding three-digit numbers that do not require composing units when adding by place.
- Let’s add numbers within 1,000.
Required Preparation
- Each group of 2 students needs 25 counters and 2 paper clips.
Gather materials from:
- Five in a Row: Addition and Subtraction, Stages 6 and 7
- Get Your Numbers in Order, Stage 2
- Mystery Number, Stage 2
- The Greatest of Them All, Stage 2
Suggested Centers
NoneTeacher Reflection Questions
Revisit the norms you established as a class for doing mathematics. Which norms are working and which might need revision? Are there any norms you or your students might want to add?