Reasoning to Find Area

Lesson 1
Tiling the Plane 
Lesson 2
Finding Area by Decomposing and Rearranging 
Lesson 3
Reasoning to Find Area
Parallelograms

Lesson 4
Parallelograms 
Lesson 5
Bases and Heights of Parallelograms 
Lesson 6
Area of 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