- 1.1: Number Talk: Size of Dividend and Divisor
- 1.2: All Stacked Up
- Are you ready for more?

- Lesson 1 Summary
- Lesson 1 Practice Problems

- 2.1: A Division Expression
- Are you ready for more?

- Lesson 2 Summary
- Lesson 2 Practice Problems

- 3.1: Dot Image: Properties of Multiplication
- 3.2: Homemade Jams
- 3.3: Making Granola
- Lesson 3 Summary
- Lesson 3 Practice Problems

- 4.1: Equal-sized Groups
- 4.2: Reasoning with Pattern Blocks
- Lesson 4 Summary
- Lesson 4 Practice Problems

- 5.1: Reasoning with Fraction Strips
- 5.2: More Reasoning with Pattern Blocks
- Are you ready for more?

- Lesson 5 Summary
- Lesson 5 Practice Problems

- 6.1: How Many of These in That?
- 6.2: Representing Groups of Fractions with Tape Diagrams
- 6.3: Finding Number of Groups
- Lesson 6 Summary
- Lesson 6 Practice Problems

- 7.1: Estimating a Fraction of a Number
- 7.2: Fractions of Ropes
- 7.3: Fractional Batches of Ice Cream
- Lesson 7 Summary
- Lesson 7 Practice Problems

- 8.1: Inventing a Situation
- 8.2: How Much in One Batch?
- Are you ready for more?

- Lesson 8 Summary
- Lesson 8 Practice Problems

- 9.1: Number Talk: Greater Than 1 or Less Than 1?
- 9.2: Two Water Containers
- Are you ready for more?

- 9.4: Inventing Another Situation
- Lesson 9 Summary
- Lesson 9 Practice Problems

- 10.1: Dividing by a Whole Number
- 10.2: Dividing by Unit Fractions
- Are you ready for more?

- Lesson 10 Summary
- Glossary
- Lesson 10 Practice Problems

- 11.1: Multiplying Fractions
- 11.2: Dividing a Fraction by a Fraction
- Are you ready for more?

- Lesson 11 Summary
- Lesson 11 Practice Problems

- 12.1: Number Talk: Multiplication Strategies
- Are you ready for more?

- 12.3: How Many Times as Tall or as Far?
- 12.4: Comparing Paper Rolls
- Lesson 12 Summary
- Lesson 12 Practice Problems

- 13.1: Areas of Squares
- 13.2: Areas of Squares and Rectangles
- Are you ready for more?

- 13.4: How Many Would it Take? (Part 2)
- Lesson 13 Summary
- Lesson 13 Practice Problems

- 14.1: Area of Triangle
- 14.2: Bases and Heights of Triangles
- Are you ready for more?

- Lesson 14 Summary
- Lesson 14 Practice Problems

- 15.1: A Box of Cubes
- 15.2: Cubes with Fractional Edge Lengths
- Are you ready for more?

- Lesson 15 Summary
- Lesson 15 Practice Problems

- 16.1: Operations with Fractions
- 16.2: Situations with \frac34 and \frac12
- 16.3: Pairs of Problems
- 16.4: Baking Cookies
- Lesson 16 Summary
- Lesson 16 Practice Problems

- 17.1: Determining Shipping Costs (Part 1)
- 17.2: Determining Shipping Costs (Part 2)
- 17.3: Determining Shipping Costs (Part 3)

- Lesson 1: Size of Divisor and Size of Quotient
- Lesson 2: Meanings of Division
- Lesson 3: Interpreting Division Situations
- Lesson 4: How Many Groups? (Part 1)
- Lesson 5: How Many Groups? (Part 2)
- Lesson 6: Using Diagrams to Find the Number of Groups
- Lesson 7: What Fraction of a Group?
- Lesson 8: How Much in Each Group? (Part 1)
- Lesson 9: How Much in Each Group? (Part 2)
- Lesson 10: Dividing by Unit and Non-Unit Fractions
- Lesson 11: Using an Algorithm to Divide Fractions
- Lesson 12: Fractional Lengths
- Lesson 13: Rectangles with Fractional Side Lengths
- Lesson 14: Fractional Lengths in Triangles and Prisms
- Lesson 15: Volume of Prisms
- Lesson 16: Solving Problems Involving Fractions
- Lesson 17: Fitting Boxes into Boxes
- 1.1: Snacks from the Concession Stand
- Are you ready for more?

- Lesson 1 Summary
- Lesson 1 Practice Problems

- 2.1: Changing Values
- 2.2: Squares and Rectangles
- Are you ready for more?

- 2.4: Representing Subtraction
- Lesson 2 Summary
- Lesson 2 Practice Problems

- 3.1: Do the Zeros Matter?
- 3.2: Calculating Sums
- Are you ready for more?

- Lesson 3 Summary
- Lesson 3 Practice Problems

- 4.1: The Cost of a Photo Print
- 4.2: Decimals All Around
- Are you ready for more?

- Lesson 4 Summary
- Lesson 4 Practice Problems

- 5.1: Multiplying by 10
- 5.2: Fractionally Speaking: Powers of Ten
- Are you ready for more?

- Lesson 5 Summary
- Lesson 5 Practice Problems

- 6.1: Equivalent Expressions
- 6.2: Using Properties of Numbers to Reason about Multiplication
- 6.3: Using Area Diagrams to Reason about Multiplication
- Lesson 6 Summary
- Lesson 6 Practice Problems

- 7.1: Estimate the Product
- 7.2: Connecting Area Diagrams to Calculations with Whole Numbers
- Are you ready for more?

- 7.4: Using the Partial Products Method
- Lesson 7 Summary
- Lesson 7 Practice Problems

- 8.1: Number Talk: Twenty Times a Number
- 8.2: Calculating Products of Decimals
- Are you ready for more?

- Lesson 8 Summary
- Lesson 8 Practice Problems

- 9.1: Using Base-Ten Diagrams to Calculate Quotients
- 9.2: Using the Partial Quotients Method to Calculate Quotients
- 9.3: What’s the Quotient?
- Lesson 9 Summary
- Lesson 9 Practice Problems

- 10.1: Number Talk: Estimating Quotients
- 10.2: Lin Uses Long Division
- 10.3: Dividing Whole Numbers
- Lesson 10 Summary
- Glossary
- Lesson 10 Practice Problems

- 11.1: Number Talk: Evaluating Quotients
- 11.2: Keep Dividing
- 11.3: Using Long Division to Calculate Quotients
- Lesson 11 Summary
- Lesson 11 Practice Problems

- 12.1: Number Talk: Dividing by 4
- Are you ready for more?

- 12.3: Dividends and Divisors
- Lesson 12 Summary
- Lesson 12 Practice Problems

- 13.1: Same Values
- Are you ready for more?

- 13.3: Two Ways to Calculate Quotients of Decimals
- 13.4: Practicing Division with Decimals
- Lesson 13 Summary
- Lesson 13 Practice Problems

- 14.1: Close Estimates
- 14.2: Applying Division with Decimals
- 14.3: Distance between Hurdles
- 14.4: Examining a Tennis Court
- Lesson 14 Summary
- Lesson 14 Practice Problems

- 15.1: Folding Paper Boxes
- 15.2: Sizing Up Paper Boxes

- Lesson 1: Using Decimals in a Shopping Context
- Lesson 2: Using Diagrams to Represent Addition and Subtraction
- Lesson 3: Adding and Subtracting Decimals with Few Non-Zero Digits
- Lesson 4: Adding and Subtracting Decimals with Many Non-Zero Digits
- Lesson 5: Decimal Points in Products
- Lesson 6: Methods for Multiplying Decimals
- Lesson 7: Using Diagrams to Represent Multiplication
- Lesson 8: Calculating Products of Decimals
- Lesson 9: Using the Partial Quotients Method
- Lesson 10: Using Long Division
- Lesson 11: Dividing Numbers that Result in Decimals
- Lesson 12: Dividing Decimals by Whole Numbers
- Lesson 13: Dividing Decimals by Decimals
- Lesson 14: Using Operations on Decimals to Solve Problems
- Lesson 15: Making and Measuring Boxes
- 1.1: Which Diagram is Which?
- 1.2: Match Equations and Tape Diagrams
- Are you ready for more?

- Lesson 1 Summary
- Lesson 1 Practice Problems

- 2.1: Three Letters
- 2.2: Storytime
- Are you ready for more?

- Lesson 2 Summary
- Glossary
- Lesson 2 Practice Problems

- 3.1: Hanging Around
- 3.2: Match Equations and Hangers
- Are you ready for more?

- Lesson 3 Summary
- Lesson 3 Practice Problems

- 4.1: Number Talk: Subtracting From Five
- 4.2: Row Game: Solving Equations Practice
- Are you ready for more?

- Lesson 4 Summary
- Lesson 4 Practice Problems

- 5.1: Recalling Ways of Solving
- Are you ready for more?

- 5.3: Storytime Again
- Lesson 5 Summary
- Lesson 5 Practice Problems

- 6.1: Algebra Talk: When x is 6
- 6.2: Lemonade Sales and Heights
- Are you ready for more?

- Lesson 6 Summary
- Lesson 6 Practice Problems

- 7.1: Number Talk: Percentages
- 7.2: Representing a Percentage Problem with an Equation
- Are you ready for more?

- Lesson 7 Summary
- Lesson 7 Practice Problems

- 8.1: Algebra Talk: Solving Equations by Seeing Structure
- 8.2: Using Diagrams to Show That Expressions are Equivalent
- Are you ready for more?

- Lesson 8 Summary
- Glossary
- Lesson 8 Practice Problems

- 9.1: Number Talk: Ways to Multiply
- 9.2: Ways to Represent Area of a Rectangle
- Are you ready for more?

- Lesson 9 Summary
- Glossary
- Lesson 9 Practice Problems

- 10.1: Possible Areas
- 10.2: Partitioned Rectangles When Lengths are Unknown
- Are you ready for more?

- Lesson 10 Summary
- Lesson 10 Practice Problems

- 11.1: The Shaded Region
- 11.2: Matching to Practice Distributive Property
- Are you ready for more?

- Lesson 11 Summary
- Lesson 11 Practice Problems

- 12.1: Notice and Wonder: Dots and Lines
- Are you ready for more?

- 12.3: Make 81
- Lesson 12 Summary
- Lesson 12 Practice Problems

- 13.1: Which One Doesn’t Belong: Twos
- 13.2: Is the Equation True?
- Are you ready for more?

- Lesson 13 Summary
- Lesson 13 Practice Problems

- 14.1: Revisiting the Cube
- 14.2: Calculating Surface Area
- Are you ready for more?

- Lesson 14 Summary
- Lesson 14 Practice Problems

- 15.1: Up or Down?
- 15.2: What's the Value?
- Are you ready for more?

- Lesson 15 Summary
- Lesson 15 Practice Problems

- 16.1: Which One Would You Choose?
- Are you ready for more?

- Lesson 16 Summary
- Glossary
- Lesson 16 Practice Problems

- 17.1: Walking to the Library
- Are you ready for more?

- Lesson 17 Summary
- Glossary
- Lesson 17 Practice Problems

- 18.1: Which One Doesn’t Belong: Graphs
- 18.2: Making a Banner
- 18.3: Cereal Boxes
- 18.4: Multiplying Mosquitoes
- Lesson 18 Summary
- Lesson 18 Practice Problems

- 19.1: Matching Equations and Tables
- 19.2: Getting to Know an Equation
- 19.3: Sharing Your Equation with Others

- Lesson 1: Tape Diagrams and Equations
- Lesson 2: Truth and Equations
- Lesson 3: Staying in Balance
- Lesson 4: Practice Solving Equations and Representing Situations with Equations
- Lesson 5: A New Way to Interpret a over b
- Lesson 6: Write Expressions Where Letters Stand for Numbers
- Lesson 7: Revisit Percentages
- Lesson 8: Equal and Equivalent
- Lesson 9: The Distributive Property, Part 1
- Lesson 10: The Distributive Property, Part 2
- Lesson 11: The Distributive Property, Part 3
- Lesson 12: Meaning of Exponents
- Lesson 13: Expressions with Exponents
- Lesson 14: Evaluating Expressions with Exponents
- Lesson 15: Equivalent Exponential Expressions
- Lesson 16: Two Related Quantities, Part 1
- Lesson 17: Two Related Quantities, Part 2
- Lesson 18: More Relationships
- Lesson 19: Tables, Equations, and Graphs, Oh My!

- Glossary
- Image Attributions

- Notes
- Notes