Unit 6: Expressions, equations, and inequalities (K-A)

Lesson 10: Different options for solving one equations (K-A)

Lesson 11: Using equations to solve problems (K-A)

Lesson 13: Reintroducing inequalities (K-A)

Lesson 15: Efficiently solving inequalities (K-A)

Lesson 17: Modeling with inequalities (K-A)

Lesson 18: Subtraction with equivalent expressions (K-A)

Lesson 19: Expanding and factoring (K-A)

Lesson 21: Combining like terms (part 2) (K-A)

Lesson 22: Combining like terms (part 3) (K-A)

Lesson 4: Reasoning about equations and tape diagrams (part 1) (K-A)

Lesson 6: Distinguishing between two types of situations (K-A)

Lesson 7: Reasoning about solving equations (part 1) (K-A)

Lesson 9: Dealing with negative numbers (K-A)