Learning goals: Teacher Facing Describe (orally and in writing) a translation or rotation of a shape using informal language, e.g., “slide,” “turn left,” etc. Identify angles and rays that do not belong in a group and justify (orally) why the object does not belong. Full lesson plan (warm-up, activities, synthesis, cool-down prompt) from 8.1 Rigid Transformations and Congruence, Grade 8.