Section A: Representing Situations of the Form and
Lesson 1: Relationships between Quantities
Let’s try to solve some new kinds of problems.
Lesson 2: Reasoning About Contexts with Tape Diagrams (Part 1)
Let’s use tape diagrams to make sense of different kinds of stories.
Lesson 3: Reasoning About Contexts with Tape Diagrams (Part 2)
Let’s see how equations can describe tape diagrams.
Lesson 4: Reasoning About Equations and Tape Diagrams (Part 1)
Let’s see how tape diagrams can help us answer questions about unknown amounts in stories.
Lesson 5: Reasoning About Equations and Tape Diagrams (Part 2)
Let’s use tape diagrams to help answer questions about situations where the equation has parentheses.
Lesson 6: Distinguishing between Two Types of Situations
Let’s think about equations with and without parentheses and the kinds of situations they describe.
Section B: Solving Equations of the Form and
Lesson 7: Reasoning About Solving Equations (Part 1)
Let’s see how a balanced hanger is like an equation and how moving its weights is like solving the equation.
Lesson 8: Reasoning About Solving Equations (Part 2)
Let’s use hangers to understand two different ways of solving equations with parentheses.
Lesson 9: Dealing with Negative Numbers
Let’s show that doing the same to each side works for negative numbers too.
Lesson 10: Different Options for Solving One Equation
Let’s think about which way is easier when we solve equations with parentheses.
Lesson 11: Using Equations to Solve Problems
Let’s use tape diagrams, equations, and reasoning to solve problems.
Lesson 12: Solving Problems About Percent Increase or Decrease
Let’s use tape diagrams, equations, and reasoning to solve problems with negatives and percents.
Section C: Inequalities
Lesson 13: Reintroducing Inequalities
Let’s work with inequalities.
Lesson 14: Finding Solutions to Inequalities in Context
Let’s solve more complicated inequalities.
Lesson 15: Efficiently Solving Inequalities
Let’s solve more complicated inequalities.
Lesson 16: Interpreting Inequalities
Let’s write inequalities.
Lesson 17: Modeling with Inequalities
Let’s look at solutions to inequalities.
Section D: Writing Equivalent Expressions
Lesson 18: Subtraction in Equivalent Expressions
Let’s find ways to work with subtraction in expressions.
Lesson 19: Expanding and Factoring
Let’s use the distributive property to write expressions in different ways.
Lesson 20: Combining Like Terms (Part 1)
Let’s see how we can tell that expressions are equivalent.
Lesson 21: Combining Like Terms (Part 2)
Let’s see how to use properties correctly to write equivalent expressions.
Lesson 22: Combining Like Terms (Part 3)
Let’s see how we can combine terms in an expression to write it with less terms.
Section E: Let’s Put It to Work
Lesson 23: Applications of Expressions
Let’s use expressions to solve problems.