### Interpreting Negative Numbers

### Adding and Subtracting Rational 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

### Multiplying and Dividing Rational Numbers

#### Lesson 8

Position, Speed, and Direction#### Lesson 9

Multiplying Rational Numbers#### Lesson 10

Multiply!#### Lesson 11

Dividing Rational Numbers#### Lesson 12

Negative Rates