• 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

  • Part 1: Developing Strategies for Problems with Sums to Twenty
  • Part 2: Sorting Sums
  • Summarizing the Lesson
  • Homework and Practice
  • Answer Keys

• Lesson 2

  • Part 1: Creating a Visual Representation of Doubling Numbers
  • Part 2: Doubles and Counting Numbers
  • Summarizing the Lesson
  • Homework and Practice
  • Literature Connection
  • Answer Keys

• Lesson 3

  • Part 1: Doubling and Halving as Inverse Operations
  • Part 2: Using Connecting Cubes to Double and Halve
  • Summarizing the Lesson
  • Homework and Practice
  • Answer Keys

• Lesson 4

  • Part 1: Doubles and Near Doubles
  • Part 2: Play Doubles, Doubles +1, Doubles −1
  • Summarizing the Lesson
  • Homework and Practice
  • Answer Keys

• Lesson 5

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

• Lesson 6

  • Part 1: True or False Number Sentences
  • Part 2: Finding Missing Numbers
  • Summarizing the Lesson
  • Homework and Practice
  • Answer Keys

• Lesson 7

  • Part 1: Build Addition Strategies Menu for Larger Numbers
  • Part 2: Practice with Addition Strategies for Larger Numbers
  • Summarizing the Lesson
  • Homework and Practice
  • Answer Keys

• Lesson 8

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

• Lesson 9

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

• Lesson 10

  • Part 1: Build a Subtraction Strategies Menu
  • Part 2: Practice Subtraction Strategies
  • Summarizing the Lesson
  • Homework and Practice
  • Answer Keys

Lesson 6

Thinking about Number Sentences

Est. Class Sessions: 2

Daily Practice and Problems

X

Teacher Notes

X

1. 14 25
2. 24 42
3. 63 36
4. 16 61

5. Possible response: 16 has one group of ten and 61 has six groups of ten, so 61 is greater.

Q. Compare

Compare the numbers. Use symbols.

1. 14 25
2. 24 42
3. 63 36
4. 16 61

5. Tell your neighbor how you compared the numbers in Question D.