Learning goals: Teacher Facing Comprehend the phrase “scale factor” and explain (orally) how it relates corresponding lengths of a figure and its scaled copy. Explain (orally) what it means to say one part in a figure “corresponds” to a part in another figure. Identify and describe (orally and in writing) corresponding points, corresponding segments, or corresponding angles in a pair of figures. Full lesson plan (warm-up, activities, synthesis, cool-down prompt) from 7.1 Scale Drawings, Grade 7.