- 1.1: Scaled or Not?
- 1.2: Flags Are Many Sizes
- Are you ready for more?

- Lesson 1 Summary
- Glossary
- Lesson 1 Practice Problems

- 2.1: Number Talk: Division
- 2.2: A Train is Traveling at . . .
- Are you ready for more?

- 2.4: Scaling the Mona Lisa
- Lesson 2 Summary
- Glossary
- Lesson 2 Practice Problems

- 3.1: Recipe Ratios
- 3.2: The Price of Rope
- Are you ready for more?

- 3.4: Finishing the Race and More Orange Juice
- Lesson 3 Summary
- Lesson 3 Practice Problems

- 4.1: Notice and Wonder: Tape Diagrams
- Are you ready for more?

- 4.3: More and Less
- 4.4: Card Sort: Representations of Proportional Relationships
- Lesson 4 Summary
- Glossary
- Lesson 4 Practice Problems

- 5.1: Notice and Wonder: Fractions to Decimals
- Are you ready for more?

- 5.3: More and Less with Decimals
- 5.4: Card Sort: More Representations
- Lesson 5 Summary
- Glossary
- Lesson 5 Practice Problems

- 6.1: Improving Their Game
- 6.2: More Cereal and a Discounted Shirt
- Are you ready for more?

- 6.4: Agree or Disagree: Percentages
- Lesson 6 Summary
- Glossary
- Lesson 6 Practice Problems

- 7.1: Notice and Wonder: Double Number Line
- 7.2: Double Number Lines
- Are you ready for more?

- 7.4: Protecting the Green Sea Turtle
- Lesson 7 Summary
- Lesson 7 Practice Problems

- 8.1: Number Talk: From 100 to 106
- 8.2: Interest and Depreciation
- Are you ready for more?

- 8.4: Representing Percent Increase and Decrease: Equations
- Lesson 8 Summary
- Lesson 8 Practice Problems

- 9.1: Number Talk: What Percentage?
- 9.2: Waiting Tables
- Are you ready for more?

- 9.4: Population Growth
- Lesson 9 Summary
- Lesson 9 Practice Problems

- 10.1: Notice and Wonder: The Price of Sunglasses
- 10.2: Shopping in Two Different Cities
- 10.3: Shopping in a Third City
- Are you ready for more?

- Lesson 10 Summary
- Lesson 10 Practice Problems

- 11.1: Leaving a Tip
- Are you ready for more?

- 11.3: Commission at a Gym
- 11.4: Card Sort: Percentage Situations
- Lesson 11 Summary
- Lesson 11 Practice Problems

- 12.1: Tax, Tip, and Discount
- Are you ready for more?

- 12.3: Info Gap: Sporting Goods
- Lesson 12 Summary
- Lesson 12 Practice Problems

- 13.1: Measuring to the Nearest
- 13.2: Measuring a Soccer Field
- Are you ready for more?

- Lesson 13 Summary
- Glossary
- Lesson 13 Practice Problems

- 14.1: Number Talk: Estimating a Percentage of a Number
- Are you ready for more?

- 14.3: Measuring in the Heat
- Lesson 14 Summary
- Glossary
- Lesson 14 Practice Problems

- 15.1: A Lot of Iron Ore
- 15.2: Saw Mill
- 15.3: Info Gap: Quality Control
- Lesson 15 Summary
- Lesson 15 Practice Problems

- 16.1: Sorting the News
- 16.2: Investigating
- 16.3: Displaying the News
- Lesson 16 Summary

- Lesson 1: Lots of Flags
- Lesson 2: Ratios and Rates With Fractions
- Lesson 3: Revisiting Proportional Relationships
- Lesson 4: Half as Much Again
- Lesson 5: Say It with Decimals
- Lesson 6: Increasing and Decreasing
- Lesson 7: One Hundred Percent
- Lesson 8: Percent Increase and Decrease with Equations
- Lesson 9: More and Less than 1%
- Lesson 10: Tax and Tip
- Lesson 11: Percentage Contexts
- Lesson 12: Finding the Percentage
- Lesson 13: Measurement Error
- Lesson 14: Percent Error
- Lesson 15: Error Intervals
- Lesson 16: Posing Percentage Problems
- 1.1: Using the Thermometer
- 1.2: Fractions of a Degree
- Are you ready for more?

- 1.4: Card Sort: Rational Numbers
- Lesson 1 Summary
- Glossary
- Lesson 1 Practice Problems

- 2.1: Which One Doesn’t Belong: Arrows
- Are you ready for more?

- 2.3: Winter Temperatures
- Lesson 2 Summary
- Lesson 2 Practice Problems

- 3.1: That's the Opposite
- 3.2: Cliffs and Caves
- Are you ready for more?

- 3.4: School Supply Number Line
- Lesson 3 Summary
- Lesson 3 Practice Problems

- 4.1: Concert Tickets
- 4.2: Cafeteria Food Debt
- Are you ready for more?

- Lesson 4 Summary
- Glossary
- Lesson 4 Practice Problems

- 5.1: Equivalent Equations
- 5.2: Subtraction with Number Lines
- Are you ready for more?

- Lesson 5 Summary
- Lesson 5 Practice Problems

- 6.1: Number Talk: Missing Addend
- Are you ready for more?

- 6.3: Does the Order Matter?
- Lesson 6 Summary
- Lesson 6 Practice Problems

- 7.1: Positive or Negative?
- 7.2: Phone Inventory
- Are you ready for more?

- 7.4: Differences and Distances
- Lesson 7 Summary
- Lesson 7 Practice Problems

- 8.1: Distance, Rate, Time
- 8.2: Going Left, Going Right
- Are you ready for more?

- Lesson 8 Summary
- Lesson 8 Practice Problems

- 9.1: Before and After
- 9.2: Backwards in Time
- Are you ready for more?

- 9.4: Rational Numbers Multiplication Grid
- Lesson 9 Summary
- Lesson 9 Practice Problems

- 10.1: Which One Doesn’t Belong: Expressions
- 10.2: Card Sort: Matching Expressions
- Are you ready for more?

- Lesson 10 Summary
- Lesson 10 Practice Problems

- 11.1: Tell Me Your Sign
- Are you ready for more?

- 11.3: Drilling Down
- Lesson 11 Summary
- Glossary
- Lesson 11 Practice Problems

- 12.1: Grapes per Minute
- 12.2: Water Level in the Aquarium
- Are you ready for more?

- Lesson 12 Summary
- Lesson 12 Practice Problems

- 13.1: True or False: Rational Numbers
- 13.2: Card Sort: The Same But Different
- Are you ready for more?

- 13.4: Seagulls and Sharks Again
- Lesson 13 Summary
- Glossary
- Lesson 13 Practice Problems

- 14.1: Which One Doesn’t Belong: Equations
- 14.2: Draining and Filling a Tank
- Are you ready for more?

- Lesson 14 Summary
- Lesson 14 Practice Problems

- 15.1: Number Talk: Opposites and Reciprocals
- 15.2: Match Solutions
- Are you ready for more?

- 15.4: Card Sort: Matching Inverses
- Lesson 15 Summary
- Glossary
- Lesson 15 Practice Problems

- 16.1: Don't Solve It
- 16.2: Warmer or Colder than Before?
- 16.3: Animals Changing Altitudes
- Are you ready for more?

- Lesson 16 Summary
- Lesson 16 Practice Problems

- 17.1: Revisiting Interest and Depreciation
- 17.2: Gains and Losses
- 17.3: What is a Stock Portfolio?
- 17.4: Your Own Stock Portfolio

- Lesson 1: Interpreting Negative Numbers
- Lesson 2: Changing Temperatures
- Lesson 3: Changing Elevation
- Lesson 4: Money and Debts
- Lesson 5: Representing Subtraction
- Lesson 6: Subtracting Rational Numbers
- Lesson 7: Adding and Subtracting to Solve Problems
- Lesson 8: Position, Speed, and Direction
- Lesson 9: Multiplying Rational Numbers
- Lesson 10: Multiply!
- Lesson 11: Dividing Rational Numbers
- Lesson 12: Negative Rates
- Lesson 13: Expressions with Rational Numbers
- Lesson 14: Solving Problems with Rational Numbers
- Lesson 15: Solving Equations with Rational Numbers
- Lesson 16: Representing Contexts with Equations
- Lesson 17: The Stock Market
- 1.1: Pricing Theater Popcorn
- 1.2: Entrance Fees
- Are you ready for more?

- Lesson 1 Summary
- Lesson 1 Practice Problems

- 2.1: Notice and Wonder: Remembering Tape Diagrams
- 2.2: Every Picture Tells a Story
- Are you ready for more?

- Lesson 2 Summary
- Lesson 2 Practice Problems

- 3.1: Find Equivalent Expressions
- 3.2: Matching Equations to Tape Diagrams
- Are you ready for more?

- Lesson 3 Summary
- Glossary
- Lesson 3 Practice Problems

- 4.1: Algebra Talk: Seeing Structure
- 4.2: Situations and Diagrams
- Are you ready for more?

- Lesson 4 Summary
- Lesson 4 Practice Problems

- 5.1: Algebra Talk: Seeing Structure
- 5.2: More Situations and Diagrams
- Are you ready for more?

- Lesson 5 Summary
- Lesson 5 Practice Problems

- 6.1: Which One Doesn’t Belong: Seeing Structure
- 6.2: Card Sort: Categories of Equations
- Are you ready for more?

- Lesson 6 Summary
- Lesson 6 Practice Problems

- 7.1: Hanger Diagrams
- 7.2: Hanger and Equation Matching
- 7.3: Use Hangers to Understand Equation Solving
- Lesson 7 Summary
- Lesson 7 Practice Problems

- 8.1: Equivalent to 2(x+3)
- 8.2: Either Or
- 8.3: Use Hangers to Understand Equation Solving, Again
- Lesson 8 Summary
- Lesson 8 Practice Problems

- 9.1: Which One Doesn’t Belong: Rational Number Arithmetic
- 9.2: Old and New Ways to Solve
- 9.3: Keeping It True
- Lesson 9 Summary
- Lesson 9 Practice Problems

- 10.1: Algebra Talk: Solve Each Equation
- 10.2: Analyzing Solution Methods
- 10.3: Solution Pathways
- Lesson 10 Summary
- Lesson 10 Practice Problems

- 11.1: Remember Tape Diagrams
- 11.2: At the Fair
- Are you ready for more?

- Lesson 11 Summary
- Lesson 11 Practice Problems

- 12.1: 20% Off
- 12.2: Walking More Each Day
- Are you ready for more?

- Lesson 12 Summary
- Lesson 12 Practice Problems

- 13.1: Greater Than One
- 13.2: The Roller Coaster
- Are you ready for more?

- Lesson 13 Summary
- Lesson 13 Practice Problems

- 14.1: Solutions to Equations and Solutions to Inequalities
- 14.2: Earning Money for Soccer Stuff
- Are you ready for more?

- Lesson 14 Summary
- Glossary
- Lesson 14 Practice Problems

- 15.1: Lots of Negatives
- 15.2: Inequalities with Tables
- Are you ready for more?

- Lesson 15 Summary
- Lesson 15 Practice Problems

- 16.1: Solve Some Inequalities!
- 16.2: Club Activities Matching
- Are you ready for more?

- Lesson 16 Summary
- Lesson 16 Practice Problems

- 17.1: Possible Values
- 17.2: Elevator
- Are you ready for more?

- Lesson 17 Summary
- Lesson 17 Practice Problems

- 18.1: Number Talk: Additive Inverses
- 18.2: A Helpful Observation
- Are you ready for more?

- Lesson 18 Summary
- Glossary
- Lesson 18 Practice Problems

- 19.1: Number Talk: Parentheses
- Are you ready for more?

- Lesson 19 Summary
- Glossary
- Lesson 19 Practice Problems

- 20.1: Why is it True?
- Are you ready for more?

- 20.3: Making Sides Equal
- Lesson 20 Summary
- Lesson 20 Practice Problems

- 21.1: True or False?
- Are you ready for more?

- 21.3: Grouping Differently
- Lesson 21 Summary
- Lesson 21 Practice Problems

- 22.1: Are They Equal?
- 22.2: X’s and Y’s
- 22.3: Seeing Structure and Factoring
- Lesson 22 Summary
- Lesson 22 Practice Problems

- 23.1: Algebra Talk: Equivalent to 0.75t-21
- 23.2: Two Ways to Calculate
- 23.3: Which Way?

- Lesson 1: Relationships between Quantities
- Lesson 2: Reasoning about Contexts with Tape Diagrams
- Lesson 3: Reasoning about Equations with Tape Diagrams
- Lesson 4: Reasoning about Equations and Tape Diagrams (Part 1)
- Lesson 5: Reasoning about Equations and Tape Diagrams (Part 2)
- Lesson 6: Distinguishing between Two Types of Situations
- Lesson 7: Reasoning about Solving Equations (Part 1)
- Lesson 8: Reasoning about Solving Equations (Part 2)
- Lesson 9: Dealing with Negative Numbers
- Lesson 10: Different Options for Solving One Equation
- Lesson 11: Using Equations to Solve Problems
- Lesson 12: Solving Problems about Percent Increase or Decrease
- Lesson 13: Reintroducing Inequalities
- Lesson 14: Finding Solutions to Inequalities in Context
- Lesson 15: Efficiently Solving Inequalities
- Lesson 16: Interpreting Inequalities
- Lesson 17: Modeling with Inequalities
- Lesson 18: Subtraction in Equivalent Expressions
- Lesson 19: Expanding and Factoring
- Lesson 20: Combining Like Terms (Part 1)
- Lesson 21: Combining Like Terms (Part 2)
- Lesson 22: Combining Like Terms (Part 3)
- Lesson 23: Applications of Expressions

- Glossary
- Image Attributions

- Notes
- Notes