- Section A: Features of Patterns
- Warm-up: Notice and Wonder: Sets of Circles
- 1.1: Bottle Cap Patterns
- 1.2: Taller and Taller

- Warm-up: How Many Do You See: Colorful Tiles
- 2.1: Patterns that Repeat
- 2.2: Numbered Patterns
- 2.3: Clare’s Pattern

- Warm-up: Number Talk: Patterns in Multiplication
- 3.1: Growing Rectangles
- 3.2: More Growing Rectangles
- 3.3: No Grid This Time!

- Warm-up: Which One Doesn’t Belong: Stacked Squares
- 4.1: Count by 10 and by 9
- 4.2: Count by 99
- 4.3: Count by 15
- Section A Summary
- Section A Practice Problems

- Section B: Multi-digit Multiplication
- Warm-up: Number Talk: A Number Times Some Multiple of 10
- 5.1: Elena’s Sticky Gift
- 5.2: More and More Stickers

- Warm-up: Notice and Wonder: With and Without a Grid
- 6.1: Tyler's Diagrams
- 6.2: Two Kinds of Diagrams

- Warm-up: Estimation Exploration: Mysterious Area
- 7.1: Larger Numbers to Multiply
- 7.2: Jada’s Errors

- Warm-up: Number Talk: Extra Groups
- 8.1: Two by Two
- 8.2: Decompose by Place Value

- Warm-up: Which One Doesn’t Belong: Expressions Galore
- 9.1: An Algorithm for Noah
- 9.2: Try an Algorithm with Partial Products

- Warm-up: Number Talk: Products
- 10.1: Partial Products, Recorded
- 10.2: Han’s Multiplication Mishap

- Warm-up: Number Talk: The Value of the Digits
- 11.1: Two Algorithms to Multiply
- 11.2: Algorithm Comparison

- Warm-up: What Do You Know About 1 Year?
- 12.1: Time Flies When We Leap Years
- 12.2: Coin Collection
- Section B Summary
- Section B Practice Problems

- Section C: Multi-digit Division
- Warm-up: Estimation Exploration: Lots of Paletas
- 13.1: Paletas for a Class Party
- 13.2: More Snacks for a Class Party

- Warm-up: Number Talk: Dividing by 7
- 14.1: Write Multiples
- 14.2: Jada’s Mystery Number

- Warm-up: Estimation Exploration: Area of a Soccer Field
- 15.1: Elena’s Mural
- 15.2: Tyler’s Mural

- Warm-up: What Do You Know About Base-ten Blocks?
- 16.1: Blocks to Divide
- 16.2: Show Us Your Blocks

- Warm-up: Which One Doesn’t Belong: Base-ten Diagrams
- 17.1: Divide with Diagrams or Blocks
- 17.2: Help Noah Get Unstuck

- Warm-up: Number Talk: Divide by 3
- 18.1: Decompose Dividends
- 18.2: Tyler’s Method

- Warm-up: Notice and Wonder: Equations with Hundreds
- 19.1: A Stack of Partial Quotients
- 19.2: Andre and Elena’s Work
- 19.3: Incomplete Calculations

- 20.1: Muffins and Seats
- 20.2: Save for a Garden
- Section C Summary
- Section C Practice Problems

- Section D: Let’s Put It to Work: Problem Solving with Large Numbers
- Warm-up: Which One Doesn’t Belong: Expressions with 5 or 90
- 21.1: Going on a Field Trip
- 21.2: A Trip to the Movies

- Warm-up: How Many Do You See: Shaded Squares
- 22.1: Create a Class Banner
- 22.2: Replace the Classroom Carpet

- Warm-up: True or False: Differences
- 23.1: Back and Forth
- 23.2: Fitness Challenge

- Warm-up: Notice and Wonder: Native American Languages
- 24.1: Do You Speak Navajo?
- 24.2: Languages in Philadelphia and Chicago
- Section D Summary

- Warm-up: How Many Do You See: Paper Flowers
- 25.1: Paper Flower Construction
- 25.2: Quinceañera Decorations
- 25.3: Make Your Own Problems
- Section D Practice Problems

- Glossary
- Image Attributions

- Citations
- Notes
- Notes