### Proportional Relationships with Fractions

#### Lesson 1

Lots of Flags#### Lesson 2

Ratios and Rates With Fractions#### Lesson 3

Revisiting Proportional Relationships#### Lesson 4

Half as Much Again#### Lesson 5

Say It with Decimals

### Percent Increase and Decrease

#### Lesson 6

Increasing and Decreasing#### Lesson 7

One Hundred Percent#### Lesson 8

Percent Increase and Decrease with Equations#### Lesson 9

More and Less than 1%

### Applying Percentages

#### Lesson 10

Tax and Tip#### Lesson 11

Percentage Contexts#### Lesson 12

Finding the Percentage#### Lesson 13

Measurement Error#### Lesson 14

Percent Error#### Lesson 15

Error Intervals