Focus Area of Task:
Solve real-world and mathematical problems involving area, surface area, and volume
Core Ideas of Focus Area:
Reasoning about relationships among shapes to determine area.
Finding areas of right triangles, other triangles, and special quadrilaterals by decomposing these shapes, rearranging or removing pieces, and relating the shapes to rectangles.
Discussing, developing, and justifying formulas for areas of triangles and parallelograms.
Finding areas of polygons and surfaces by decomposing them into pieces whose area can be determined.