Unit 1

Section A: Reasoning to Find Area

• Lesson 1: Tiling the Plane

  Let’s look at tiling patterns and think about area.

  • Lesson Activities
  • Practice Problems

• Lesson 2: Finding Area by Decomposing and Rearranging

  Let’s create shapes and find their areas.

  • Lesson Activities
  • Practice Problems

• Lesson 3: Reasoning to Find Area

  Let’s decompose and rearrange shapes to find their areas.

  • Lesson Activities
  • Practice Problems

Section B: Parallelograms

• Lesson 4: Parallelograms

  Let’s investigate the features and area of parallelograms.

  • Lesson Activities
  • Practice Problems

• Lesson 5: Areas of Parallelograms

  Let’s investigate the area of parallelograms some more.

  • Lesson Activities
  • Practice Problems

• Lesson 6: From Parallelograms to Triangles

  Let’s compare parallelograms and triangles.

  • Lesson Activities
  • Practice Problems

Section C: Triangles

• Lesson 7: Area of Triangles

  Let’s use what we know about parallelograms to find the area of triangles.

  • Lesson Activities
  • Practice Problems

• Lesson 8: Formula for the Area of a Triangle

  Let’s write and use a formula to find the area of a triangle.

  • Lesson Activities
  • Practice Problems

Section D: Surface Area

• Lesson 9: Polygons

  Let’s investigate polygons and their areas.

  • Lesson Activities
  • Practice Problems

• Lesson 10: What Is Surface Area?

  Let’s cover the surfaces of some three-dimensional objects.

  • Lesson Activities
  • Practice Problems

• Lesson 11: Polyhedra and Nets

  Let’s use nets to find the surface area of polyhedra.

  • Lesson Activities
  • Practice Problems

• Lesson 12: More Nets, More Surface Area

  Let’s draw nets and find the surface area of polyhedra.

  • Lesson Activities
  • Practice Problems

Section E: Let’s Put It to Work

• Optional

  Lesson 13: Designing a Tent

  Let’s design some tents.

  • Lesson Activities