Area & Surface Area

In this unit, students learn to calculate areas of polygons by decomposing, rearranging, and composing shapes. They also represent polyhedra with nets and calculate their surface areas.

Section 1: Area (Lessons 1–8)

Students develop strategies for calculating the area of parallelograms, triangles, and polygons, including generalizing and using formulas.

Section 2: Surface Area (Lessons 9–13)

Students make connections between three-dimensional polyhedra and nets that represent them, then use those nets to calculate the surface area.