Learning goals: Teacher Facing Compare and contrast (orally and in writing) problems that involve surface area and volume of prisms. Decide whether to calculate the surface area or volume of a prism to solve a problem in a real-world situation, and justify (orally) the decision. Estimate measurements of a prism in a real-world situation, and explain (orally) the estimation strategy. Full lesson plan (warm-up, activities, synthesis, cool-down prompt) from 7.7 Angles, Triangles, and Prisms, Grade 7.