This great activity is a self-checking loop of problems. This set is all to do with complex numbers (see thumbnails for examples. Students choose to start with any question they'd like, determine the answer, and look for it around the room. Once they find the answer, they complete the question on that specific page. The questions are in a big loop so when the student returns back to their original page, they are finished. This is a fantastic way to have a self-checking review. Students know immediately if they did something wrong with their calculations. It also allows students to spread out and work at their own pace.