# Lesson 6

Center Day 1 (optional)

### Lesson Purpose

The purpose of this lesson is for students to skip-count by 2, 5, and 10 and to add and subtract 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 Write Numbers center, which was first introduced in grade 1. In this new stage, called Skip Count by 2, 5, and 10, students write numbers as they skip-count by 2, 5, or 10. In Activity 2, students choose to continue working on Write Numbers, or choose between three previously introduced centers focused on addition and subtraction within 1,000.

### Learning Goals

Teacher Facing

• Add and subtract within 1,000 using strategies based on place value and the properties of operations.
• Skip-count by 2, 5, and 10.

### Student Facing

• Let’s skip-count and practice addition and subtraction.

### Required Materials

Materials to Gather

Materials to Copy

• Write the Number Stage 4 Gameboard

### Required Preparation

Activity 2:

Gather materials from:
• Write Numbers, Stage 4
• Target Numbers, Stages 6 and 7
• Five in a Row, Stages 7 and 8
• How Close, Stage 4

Building Towards

### Lesson Timeline

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

### Teacher Reflection Questions

How did you use questioning to assess what students understand about mathematics during their work in centers?

### Print Formatted Materials

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