# Lesson 10

Center Day 2

### Lesson Purpose

The purpose of this lesson is for students to practice adding and subtracting within 10.

### Lesson Narrative

In Activity 1, students learn a new center called Capture Squares. In this center, students roll two number cubes and find the sum. They draw lines on the game board around the sums and try to "capture the squares." In Activity 2, students choose a center to work on that focuses on addition and subtraction within 10.

• Representation
• MLR8

### Learning Goals

Teacher Facing

• Add and subtract within 10 in a way that makes sense to them.

### Student Facing

• Let’s play games to practice adding and subtracting.

### Required Materials

Materials to Gather

Materials to Copy

• Capture Squares Stage 1 Gameboard

### Required Preparation

Activity 2:

• Gather materials from previous centers:
• Math Stories, Stage 4
• Shake and Spill, Stages 3 and 4
• Capture Squares, Stage 1

### Lesson Timeline

 Warm-up 10 min Activity 1 20 min Activity 2 20 min Lesson Synthesis 10 min

### Teacher Reflection Questions

When in today's lesson were students able to see themselves as productive mathematical reasoners?