• Unit Overview

  • Letter Home
  • Unit Preparation
  • Mathematics in this Unit
  • Assessment in this Unit
  • Key Assessment Opportunities Chart
• Daily Practice and Problems
• Home Practice

• Lesson 1

  • Developing the Lesson
  • Summarizing the Lesson
  • Homework and Practice
  • Answer Keys

• Lesson 2

  • Part 1: Parts and Wholes
  • Part 2: Using Calculators
  • Summarizing the Lesson
  • Homework and Practice
  • Answer Keys

• Lesson 3

  • Part 1: Parts and Wholes
  • Part 2: Missing Addends
  • Summarizing the Lesson
  • Homework and Practice
  • Answer Keys

• Lesson 4

  • Part 1: Counting On with Cubes
  • Part 2: The Counting-On Game
  • Summarizing the Lesson
  • Homework and Practice
  • Answer Keys

• Lesson 5

  • Developing the Lesson
  • Summarizing the Lesson
  • Homework and Practice
  • Answer Keys

Lesson 5

Counting On to Add with Number Lines

Est. Class Sessions: 1

Daily Practice and Problems

X

Teacher Notes

X

Ask students to explain their strategies.

Possible responses include:

1.

First I put together a train of 11 cubes. Then I counted to 5. I saw there were 6 more.

6; 5 + 6 = 11

2.

I put 10 dots in a ten frame. I covered up 3. I saw there were seven left.

7; 7 + 3 = 10

N. What Is Missing?

Find the missing number of pets. Write a number sentence. Show or tell how you solved each problem.