Contents

1. Section A: Features of Patterns
2. Lesson 1: Patterns that Grow
   1. Warm-up: Notice and Wonder: Sets of Circles
   2. 1.1: Bottle Cap Patterns
   3. 1.2: Taller and Taller
3. Lesson 2: Patterns that Repeat
   1. Warm-up: How Many Do You See: Colorful Tiles
   2. 2.1: Patterns that Repeat
   3. 2.2: Numbered Patterns
   4. 2.3: Clare’s Pattern
4. Lesson 3: From Visual Patterns to Numerical Patterns
   1. Warm-up: Number Talk: Patterns in Multiplication
   2. 3.1: Growing Rectangles
   3. 3.2: More Growing Rectangles
   4. 3.3: No Grid This Time!
5. Lesson 4: Numerical Patterns
   1. Warm-up: Which One Doesn’t Belong: Stacked Squares
   2. 4.1: Count by 10 and by 9
   3. 4.2: Count by 99
   4. 4.3: Count by 15
   5. Section A Summary
   6. Section A Practice Problems
6. Section B: Multi-digit Multiplication
7. Lesson 5: Products Beyond 100
   1. Warm-up: Number Talk: A Number Times Some Multiple of 10
   2. 5.1: Elena’s Sticky Gift
   3. 5.2: More and More Stickers
8. Lesson 6: Multiply Two-digit Numbers and One-digit Numbers
   1. Warm-up: Notice and Wonder: With and Without a Grid
   2. 6.1: Tyler's Diagrams
   3. 6.2: Two Kinds of Diagrams
9. Lesson 7: Multiply Three- and Four-digit Numbers by One-digit Numbers
   1. Warm-up: Estimation Exploration: Mysterious Area
   2. 7.1: Larger Numbers to Multiply
   3. 7.2: Jada’s Errors
10. Lesson 8: Multiply 2 Two-digit Numbers
    1. Warm-up: Number Talk: Extra Groups
    2. 8.1: Two by Two
    3. 8.2: Decompose by Place Value
11. Lesson 9: Recording Partial Products: One-digit and Three- or Four-digit Factors
    1. Warm-up: Which One Doesn’t Belong: Expressions Galore
    2. 9.1: An Algorithm for Noah
    3. 9.2: Try an Algorithm with Partial Products
12. Lesson 10: Using Algorithms with Partial Products: 2 Two-digit Numbers
    1. Warm-up: Number Talk: Products
    2. 10.1: Partial Products, Recorded
    3. 10.2: Han’s Multiplication Mishap
13. Lesson 11: Partial Products and the Standard Algorithm
    1. Warm-up: Number Talk: The Value of the Digits
    2. 11.1: Two Algorithms to Multiply
    3. 11.2: Algorithm Comparison
14. Lesson 12: Solve Problems Involving Multiplication
    1. Warm-up: What Do You Know About 1 Year?
    2. 12.1: Time Flies When We Leap Years
    3. 12.2: Coin Collection
    4. Section B Summary
    5. Section B Practice Problems
15. Section C: Multi-digit Division
16. Lesson 13: Situations Involving Equal-size Groups
    1. Warm-up: Estimation Exploration: Lots of Paletas
    2. 13.1: Paletas for a Class Party
    3. 13.2: More Snacks for a Class Party
17. Lesson 14: Situations Involving Factors and Multiples
    1. Warm-up: Number Talk: Dividing by 7
    2. 14.1: Write Multiples
    3. 14.2: Jada’s Mystery Number
18. Lesson 15: Situations Involving Area
    1. Warm-up: Estimation Exploration: Area of a Soccer Field
    2. 15.1: Elena’s Mural
    3. 15.2: Tyler’s Mural
19. Lesson 16: Base-ten Blocks to Divide
    1. Warm-up: What Do You Know About Base-ten Blocks?
    2. 16.1: Blocks to Divide
    3. 16.2: Show Us Your Blocks
20. Lesson 17: Base-ten Diagrams to Represent Division
    1. Warm-up: Which One Doesn’t Belong: Base-ten Diagrams
    2. 17.1: Divide with Diagrams or Blocks
    3. 17.2: Help Noah Get Unstuck
21. Lesson 18: Divide with Partial Quotients
    1. Warm-up: Number Talk: Divide by 3
    2. 18.1: Decompose Dividends
    3. 18.2: Tyler’s Method
22. Lesson 19: Division With and Without Remainders
    1. Warm-up: Notice and Wonder: Equations with Hundreds
    2. 19.1: A Stack of Partial Quotients
    3. 19.2: Andre and Elena’s Work
    4. 19.3: Incomplete Calculations
23. Lesson 20: Interpret Remainders in Division Situations
    1. 20.1: Muffins and Seats
    2. 20.2: Save for a Garden
    3. Section C Summary
    4. Section C Practice Problems
24. Section D: Let’s Put It to Work: Problem Solving with Large Numbers
25. Lesson 21: Different Ways to Solve Problems
    1. Warm-up: Which One Doesn’t Belong: Expressions with 5 or 90
    2. 21.1: Going on a Field Trip
    3. 21.2: A Trip to the Movies
26. Lesson 22: Problems About Perimeter and Area
    1. Warm-up: How Many Do You See: Shaded Squares
    2. 22.1: Create a Class Banner
    3. 22.2: Replace the Classroom Carpet
27. Lesson 23: Solve Problems with Many Operations
    1. Warm-up: True or False: Differences
    2. 23.1: Back and Forth
    3. 23.2: Fitness Challenge
28. Lesson 24: Assess the Reasonableness of Solutions
    1. Warm-up: Notice and Wonder: Native American Languages
    2. 24.1: Do You Speak Navajo?
    3. 24.2: Languages in Philadelphia and Chicago
    4. Section D Summary
29. Lesson 25: Paper Flower Decorations
    1. Warm-up: How Many Do You See: Paper Flowers
    2. 25.1: Paper Flower Construction
    3. 25.2: Quinceañera Decorations
    4. 25.3: Make Your Own Problems
    5. Section D Practice Problems
30. Glossary
31. Attributions
    1. Image Attributions
32. Citations
33. Notes
34. Notes