Unit Two
Area of Polygons
This unit explores formulas for the area of different polygons. Students compose and decompose rectangles and parallelograms as they derive formulas. They find areas of triangles, parallelograms, trapezoids, pentagons, hexagons, and octagons by decomposing these shapes, rearranging or removing pieces, and relating the shapes to rectangles. Using these methods, students discuss, develop, and justify formulas for these shapes. They solve real world problems involving area. Students will use what they learn about area in this unit again in unit 4, where they explore nets and surface area.
BIg Ideas & Vocabulary
Click on the image above to access Unit 2 Vocabulary and Big Ideas.