• 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
  • Extension
  • Answer Keys

• Lesson 2

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

• Lesson 3

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

• Lesson 4

  • Part 1: Demonstrate the Lab and Draw the Picture
  • Part 2: Collect and Graph the Data
  • Part 3: Analyzing the Data
  • Summarizing the Lesson
  • Homework and Practice
  • Extension
  • Answer Keys

• Lesson 5

  • Part 1: Make It Balance
  • Part 2: Make 99 Game
  • Summarizing the Lesson
  • Homework and Practice
  • Answer Keys

• Lesson 6

  • Part 1: Review Telling Time to the Nearest Five Minutes
  • Part 2: Elapsed Time
  • Summarizing the Lesson
  • Homework and Practice
  • Answer Keys

Lesson 3

Balanced and Equal

Est. Class Sessions: 1–2

Daily Practice and Problems

X

Teacher Notes

X

Encourage students to share the strategies and the patterns they notice.

1. 10 + 5 = 9 +  6
2. 9 + 5 =  4 + 10
3. 10 + 6 =  9 + 7
4. 9 + 9 = 8 + 10
5. 10 + 7 = 8 +  9
6. 8 + 6 = 4 + 10
7. Possible strategy: 9 + 5 = 14 and 10 is one more than 9, so it needs a number one less than 5 to make 14.

Ongoing Assessment

Use DPP item G to assess students’ fluency with the addition facts in Group F [E12].

G. Using 10

1. 10 + 5 = 9 +
2. 9 + 5 = + 10
3. 10 + 6 = + 7
4. 9 + 9 = 8 +
5. 10 + 7 = 8 +
6. 8 + 6 = 4 +

7. Show or tell how you solved Question B.