This is a 12 question engaging order of operation review activity. Students are expected to know the steps of Order of Operations, PEMDAS, or "Please Excuse My Dear Aunt Sally." Some of the questions iinclude negatives for students to work through as well. The first few problems are somewhat easier, and the last few are more challenging. In order to complete the assignment, students have to shade in the boxes of the questions they answer, leaving 4 boxes unshaded. Decode the pictures to solve the mystery: What is Dr. Order of Operations hobby? This is a great in-class assignment, homework, or even use it as an assessment tool. Answer key is included!!!