Unit 7, Lesson 11
Center Day 2 (Optional)
Grade 2
Preparation
Lesson Purpose
The purpose of this lesson is for students to practice adding numbers within 1,000.
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 4 of the How Close? center. In this new stage, called How Close—Add to 1,000, students pick 8 digit cards and then choose 6 of them to make an expression that yields a number as close as possible to the target number, 1,000. In Activity 2, students learn Stage 8 of the Five in a Row: Addition and Subtraction center. In this new stage, students add within 1,000, with composing. Then they choose to continue working on Five in a Row: Addition and Subtraction, or choose between two previously introduced centers that focus on addition with three-digit numbers.
- Explain (orally) strategies for adding three-digit numbers that may require composing units when adding by place.
- Let’s add numbers within 1,000.
Required Materials
Required Preparation
Activity 2
- Each group of 2 students needs 25 counters and 2 paper clips.
- Gather materials from:
- Five in a Row, Stages 7 and 8
- How Close? Stage 4
Suggested Centers
NoneTeacher Reflection Questions
When do your students feel successful in math? How do you know?
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