# Contents

1. 1.1: Pricing Theater Popcorn
2. 1.2: Entrance Fees
1. Are you ready for more?
3. Lesson 1 Summary
4. Lesson 1 Practice Problems
1. 2.1: Notice and Wonder: Remembering Tape Diagrams
2. 2.2: Every Picture Tells a Story
1. Are you ready for more?
3. Lesson 2 Summary
4. Lesson 2 Practice Problems
1. 3.1: Find Equivalent Expressions
2. 3.2: Matching Equations to Tape Diagrams
1. Are you ready for more?
3. Lesson 3 Summary
4. Glossary
5. Lesson 3 Practice Problems
1. 4.1: Algebra Talk: Seeing Structure
2. 4.2: Situations and Diagrams
1. Are you ready for more?
3. Lesson 4 Summary
4. Lesson 4 Practice Problems
1. 5.1: Algebra Talk: Seeing Structure
2. 5.2: More Situations and Diagrams
1. Are you ready for more?
3. Lesson 5 Summary
4. Lesson 5 Practice Problems
1. 6.1: Which One Doesn’t Belong: Seeing Structure
2. 6.2: Card Sort: Categories of Equations
1. Are you ready for more?
3. Lesson 6 Summary
4. Lesson 6 Practice Problems
1. 7.1: Hanger Diagrams
2. 7.2: Hanger and Equation Matching
3. 7.3: Use Hangers to Understand Equation Solving
4. Lesson 7 Summary
5. Lesson 7 Practice Problems
1. 8.1: Equivalent to 2(x+3)
2. 8.2: Either Or
3. 8.3: Use Hangers to Understand Equation Solving, Again
4. Lesson 8 Summary
5. Lesson 8 Practice Problems
1. 9.1: Which One Doesn’t Belong: Rational Number Arithmetic
2. 9.2: Old and New Ways to Solve
3. 9.3: Keeping It True
4. Lesson 9 Summary
5. Lesson 9 Practice Problems
1. 10.1: Algebra Talk: Solve Each Equation
2. 10.2: Analyzing Solution Methods
3. 10.3: Solution Pathways
4. Lesson 10 Summary
5. Lesson 10 Practice Problems
1. 11.1: Remember Tape Diagrams
2. 11.2: At the Fair
1. Are you ready for more?
3. Lesson 11 Summary
4. Lesson 11 Practice Problems
1. 12.1: 20% Off
2. 12.2: Walking More Each Day
1. Are you ready for more?
3. Lesson 12 Summary
4. Lesson 12 Practice Problems
1. 13.1: Is This Enough?
2. 13.2: What Does It Look Like?
1. Are you ready for more?
3. Lesson 13 Summary
4. Lesson 13 Practice Problems
1. Lesson 1: Relationships between Quantities
2. Lesson 2: Reasoning about Contexts with Tape Diagrams
3. Lesson 3: Reasoning about Equations with Tape Diagrams
4. Lesson 4: Reasoning about Equations and Tape Diagrams (Part 1)
5. Lesson 5: Reasoning about Equations and Tape Diagrams (Part 2)
6. Lesson 6: Distinguishing between Two Types of Situations
7. Lesson 7: Reasoning about Solving Equations (Part 1)
8. Lesson 8: Reasoning about Solving Equations (Part 2)
9. Lesson 9: Dealing with Negative Numbers
10. Lesson 10: Different Options for Solving One Equation
11. Lesson 11: Using Equations to Solve Problems
12. Lesson 12: Solving Problems about Percent Increase or Decrease
13. Lesson 13: Using Equations to Solve for Unknown Angles
1. 1.1: Estimate Heights of People
1. Are you ready for more?
3. Lesson 1 Summary
4. Lesson 1 Practice Problems
1. 2.1: Unknowns on a Number Line
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2. 2.3: What Number Am I?
3. Lesson 2 Summary
4. Glossary
5. Lesson 2 Practice Problems
1. 3.1: True or False: Fractions and Decimals
1. Are you ready for more?
3. Lesson 3 Summary
4. Lesson 3 Practice Problems
1. 4.1: Solutions to Equations and Solutions to Inequalities
2. 4.2: Earning Money for Soccer Stuff
1. Are you ready for more?
3. Lesson 4 Summary
4. Lesson 4 Practice Problems
1. 5.1: Lots of Negatives
2. 5.2: Inequalities with Tables
1. Are you ready for more?
3. Lesson 5 Summary
4. Lesson 5 Practice Problems
1. 6.1: Possible Values
2. 6.2: Elevator
1. Are you ready for more?
3. Lesson 6 Summary
4. Lesson 6 Practice Problems
1. 7.1: Number Talk: Additive Inverses
1. Are you ready for more?
3. Lesson 7 Summary
4. Glossary
5. Lesson 7 Practice Problems
1. 8.1: Number Talk: Parentheses
1. Are you ready for more?
2. Lesson 8 Summary
3. Glossary
4. Lesson 8 Practice Problems
1. 9.1: Why is it True?
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2. 9.3: Making Sides Equal
3. Lesson 9 Summary
4. Lesson 9 Practice Problems
1. 10.1: True or False?
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2. 10.3: Grouping Differently
3. Lesson 10 Summary
4. Lesson 10 Practice Problems
1. 11.1: Are They Equal?
2. 11.2: X’s and Y’s
3. 11.3: Seeing Structure and Factoring
4. Lesson 11 Summary
5. Lesson 11 Practice Problems
1. 12.1: Matching Hangers
2. 12.2: Matching Equation Moves
1. Are you ready for more?
3. Lesson 12 Summary
4. Lesson 12 Practice Problems
1. 13.1: Different Equations?
2. 13.2: Step by Step by Step by Step
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4. Lesson 13 Summary
5. Lesson 13 Practice Problems
1. 14.1: Equal Perimeters
2. 14.2: Predicting Solutions
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3. Lesson 14 Summary
4. Lesson 14 Practice Problems
1. 15.1: Which One Doesn’t Belong: Equations
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2. 15.3: What's the Equation?
3. Lesson 15 Summary
4. Lesson 15 Practice Problems
1. 16.1: Matching Solutions
2. 16.2: Thinking About Solutions Some More
1. Are you ready for more?
3. Lesson 16 Summary
4. Glossary
5. Lesson 16 Practice Problems
1. 17.1: Which Would You Choose?
2. 17.2: Water Tanks
1. Are you ready for more?
3. Lesson 17 Summary
4. Lesson 17 Practice Problems
1. 18.1: Algebra Talk: Equivalent to 0.75t-21
2. 18.2: Two Ways to Calculate
3. 18.3: Which Way?
1. Lesson 1: Writing and Graphing Inequalities
2. Lesson 2: Solutions of Inequalities
3. Lesson 3: Interpreting Inequalities
4. Lesson 4: Finding Solutions to Inequalities in Context
5. Lesson 5: Efficiently Solving Inequalities
6. Lesson 6: Modeling with Inequalities
7. Lesson 7: Subtraction in Equivalent Expressions
8. Lesson 8: Expanding and Factoring
9. Lesson 9: Combining Like Terms (Part 1)
10. Lesson 10: Combining Like Terms (Part 2)
11. Lesson 11: Combining Like Terms (Part 3)
12. Lesson 12: Balanced Moves
13. Lesson 13: More Balanced Moves
14. Lesson 14: Strategic Solving
15. Lesson 15: All, Some, or No Solutions
16. Lesson 16: How Many Solutions?
17. Lesson 17: When Are They the Same?
18. Lesson 18: Applications of Expressions
1. Glossary