Learning goals: Teacher Facing Compare and contrast (orally) different strategies for determining the area of a parallelogram. Describe (orally and in writing) observations about the opposites sides and opposite angles of parallelograms. Explain (orally and in writing) how to find the area of a parallelogram by rearranging or enclosing it in a rectangle. Full lesson plan (warm-up, activities, synthesis, cool-down prompt) from 6.1 Area and Surface Area, Grade 6.