Learning goals: Teacher Facing Comprehend the terms “base” and “height” to refer to one side of a parallelogram and the perpendicular distance between that side and the opposite side. Generalize (orally) a process for finding the area of a parallelogram, using the length of a base and the corresponding height. Identify a base and the corresponding height for a parallelogram, and understand that there are two different base-height pairs for any parallelogram. Full lesson plan (warm-up, activities, synthesis, cool-down prompt) from 6.1 Area and Surface Area, Grade 6.