Contents

1. Section A: Add Without Making a Ten
2. Lesson 1: Add Tens or Ones
   1. Warm-up: How Many Do You See: 10-frames
   2. 1.1: What Did I Add?
   3. 1.2: Add Tens or Ones
3. Lesson 2: How Did You Add?
   1. 2.1: Find the Value
   2. 2.2: Elena and Andre Represent 63 + 25
4. Lesson 3: Add It, Explain It
   1. Warm-up: Number Talk: Add More Tens
   2. 3.1: Lin and Han Add
   3. 3.2: I Heard You Say
   4. Section A Summary
5. Lesson 4: Center Day 1
   1. Warm-up: Notice and Wonder: Marbles
   2. 4.2: Centers: Choice Time
   3. Section A Practice Problems
6. Section B: Make a Ten: Add One- and Two-digit Numbers
7. Lesson 5: Make a Ten
   1. Warm-up: How Many Do You See: Many 10-frames
   2. 5.1: Choose a Way to Add
   3. 5.2: Add ‘Em Up Partner
   4. 5.3: Tyler’s Teacher
8. Lesson 6: Make a Ten and Make Sense of Equations
   1. Warm-up: Number Talk: Add Within 20
   2. 6.1: How Many to the Next Ten?
   3. 6.2: Elena and Andre Add
9. Lesson 7: Does it Make a New Ten?
   1. Warm-up: Which One Doesn’t Belong: Expressions
   2. 7.1: A Ten or Not a Ten?
   3. 7.2: Missing Numbers
   4. Section B Summary
10. Lesson 8: Center Day 2
    1. Warm-up: Number Talk: Add Within 100
    2. 8.2: Centers: Choice Time
    3. 8.3: Addition Stories
    4. Section B Practice Problems
11. Section C: Make a Ten: Add Within 100
12. Lesson 9: Add 2 Two-digit Numbers
    1. Warm-up: Number Talk: Make a Ten
    2. 9.1: How Did You Find the Value?
    3. 9.2: Grab and Add
13. Lesson 10: Tens and Tens, Ones and Ones
    1. Warm-up: How Many Do You See: Tens and Ones
    2. 10.1: Priya‘s Work
    3. 10.2: Finish the Work
14. Lesson 11: How Did You Do That?
    1. Warm-up: True or False: Add to a Two-digit Number
    2. 11.1: How Much Litter?
    3. 11.2: It's Your Turn to Add
15. Lesson 12: Add it Up
    1. Warm-up: Number Talk: Make a Ten
    2. 12.1: Add Two-digit Numbers Within 100
    3. 12.2: Reason About Addition
    4. 12.3: Ways We Volunteer
    5. Section C Summary
16. Lesson 13: Center Day 3
    1. 13.1: Introduce Target Numbers, Add Two-Digit Numbers
    2. 13.2: Introduce Five in a Row, Add within 100 with Composing
17. Lesson 14: Food Drive
    1. Warm-up: Estimation Exploration: Food Drive
    2. 14.1: Cans for the Food Drive
    3. 14.2: Boxes of Cans
    4. Section C Practice Problems
18. Glossary
19. Attributions
20. Notes
21. Notes