These 11 surface area (of rectangular and triangular prisms) and volume (of rectangular prisms) questions lead from one question to find the answer and solve that next question. If students don't solve correctly, they will not be able to find the next problem to complete. This allows the teacher to monitor struggling students. Just fold each sheet to cover the picture and only reveal an answer to minimize confusion. To make checking easier, label each question card with the name of an island or country. Students can record their "trek" around the classroom and the correct order reveals the correct work.