Contents

1. Section A: Counting and Comparing
2. Lesson 1: Sort, Count, and Compare Groups of Objects
   1. 1.1: Sort, Count, and Compare
   2. 1.2: Who Has More?
   3. 1.3: Centers: Choice Time
3. Lesson 2: Count and Compare Collections
   1. Warm-up: How Many Do You See: 10 and Some More
   2. 2.1: Counting Collections
   3. 2.2: Comparing Collections
   4. 2.3: Centers: Choice Time
4. Lesson 3: Count to Add and Subtract
   1. 3.1: Ride the Bus
   2. 3.2: Singing Students
   3. 3.3: Centers: Choice Time
5. Lesson 4: One More and One Less
   1. Warm-up: How Many Do You See: One Less
   2. 4.1: Count Out and Show One More or One Less
   3. 4.2: Color One More or One Less
   4. 4.3: Centers: Choice Time
6. Lesson 5: Order Numbers 1-20
   1. 5.1: Order Numbers
   2. 5.3: Centers: Choice Time
   3. Section A Summary
7. Section B: Math in Our School
8. Lesson 6: Create Number Books (Part 1)
   1. Warm-up: Notice and Wonder: All Hands On
   2. 6.3: Centers: Choice Time
9. Lesson 7: Create Number Books (Part 2)
   1. Warm-up: How Many Do You See: Different Dots
10. Lesson 8: Find Someone Who, Find Something That
    1. Warm-up: Which One Doesn’t Belong: Representations of 6
    2. 8.2: Find Something That
11. Lesson 9: Where’s the Math?
    1. Warm-up: What Do You Know About Our School?
    2. 9.1: Another School Walk
    3. 9.2: Answer Our Mathematical Questions
12. Lesson 10: Tell Stories about Our School
    1. Warm-up: Notice and Wonder: Bubbles in the Park
    2. 10.2: Write Story Problems About Our School
    3. 10.3: Centers: Choice Time
13. Lesson 11: Share Story Problems
    1. Warm-up: Number Talk: Add and Subtract 2 and 3
    2. Section B Summary
14. Section C: Fluency within 5
15. Lesson 12: Make Dot Images
    1. Warm-up: How Many Do You See: Dots in Different Colors
    2. 12.3: Centers: Choice Time
16. Lesson 13: Dominoes to 5
    1. Warm-up: Notice and Wonder: Ways to Make 4
    2. 13.1: Domino Sort
    3. 13.2: Compare Dots on Dominoes
    4. 13.3: Centers: Choice Time
17. Lesson 14: Sort and Color Expressions and Images within 5
    1. 14.1: Owl Color
    2. 14.3: Centers: Choice Time
18. Lesson 15: Addition and Subtraction Expressions within 5
    1. Warm-up: Which One Doesn’t Belong: Expressions and Equations
    2. 15.3: Centers: Choice Time
19. Lesson 16: Parts to Make 5
    1. Warm-up: How Many Do You See: Add and Subtract
    2. 16.1: Revisit Shake and Spill, Cover
    3. 16.2: Missing Value
    4. 16.3: Centers: Choice Time
    5. Section C Summary
20. Section D: All About 10
21. Lesson 17: Make and Break Apart 10
    1. Warm-up: Estimation Exploration: 5 and 5 makes 10
    2. 17.2: Make and Break Apart 10
    3. 17.3: Centers: Choice Time
22. Lesson 18: All the Ways to Make 10
    1. Warm-up: Number Talk: Add and Subtract 1
    2. 18.1: Ten Pigeons
    3. 18.2: All of the Ways to Make 10
    4. 18.3: Centers: Choice Time
23. Lesson 19: Find the Number that Makes 10
    1. Warm-up: How Many Do You See: Make 10
    2. 19.1: Color the Number to Make 10
    3. 19.2: Add to Make 10
    4. 19.3: Centers: Choice Time
24. Lesson 20: More or Less than 10?
    1. Warm-up: Estimation Exploration: Close to 10
    2. 20.1: Use 10 to Estimate
    3. 20.2: Could She Be Right?
    4. 20.3: Centers: Choice Time
25. Lesson 21: Compose and Decompose Numbers 11–19
    1. Warm-up: Which One Doesn’t Belong: Numbers 11–20
    2. 21.1: Where Will They Sit?
    3. 21.2: Finish the Equations
    4. 21.3: Centers: Choice Time
    5. Section D Summary
26. Glossary
27. Attributions
    1. Image Attributions
28. Notes
29. Notes