Representing Situations of the Form and

Lesson 1
Relationships between Quantities 
Lesson 2
Reasoning about Contexts with Tape Diagrams (Part 1) 
Lesson 3
Reasoning about Contexts with Tape Diagrams (Part 2) 
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
Solving Equations of the Form and and Problems That Lead to Those Equations

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
Inequalities

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