Unit 3, Lesson 7
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 the first activity, students learn Stage 4 of the Number Puzzles center. Students work with sums and differences within 100 with composing and decomposing a ten. In the second activity, students choose to continue working on Number Puzzles or on a previously introduced center focused on solving story problems.
- Explain (orally) strategies for finding the unknown number that makes an equation true.
- Let’s practice addition and subtraction.
Required Materials
Activity 1
Activity 2
Required Preparation
- Each group of 2 needs one set of digits (0–9) from the Number Puzzle Digit Cards from a previous stage of this center.
Gather materials from:
- Number Puzzles, Stages 2–4
- Math Stories, Stage 5
Suggested Centers
NoneTeacher Reflection Questions
Who got to do math today in class and how do you know? Identify the norms or routines that allowed those students to engage in mathematics. How can you adjust these norms and routines so all students do math tomorrow?