### Reasoning to Find Area

#### Lesson 1

Tiling the Plane#### Lesson 2

Finding Area by Decomposing and Rearranging#### Lesson 3

Reasoning to Find Area

### Parallelograms

### Triangles

#### Lesson 7

From Parallelograms to Triangles#### Lesson 8

Area of Triangles#### Lesson 9

Formula for the Area of a Triangle#### Lesson 10

Bases and Heights of Triangles

### Polygons

### Surface Area

#### Lesson 12

What is Surface Area?#### Lesson 13

Polyhedra#### Lesson 14

Nets and Surface Area#### Lesson 15

More Nets, More Surface Area#### Lesson 16

Distinguishing Between Surface Area and Volume