This is a fun and engaging lesson for students to review order of operations. Place 24 chairs around the room in a circle. Place one card on each chair in numerical order (card #1 will have card#2 to the left of it and card #24 to the right of it). Each student sits at a chair and begins with their problem. They record the answer on the given answer sheet in the correct spot. After one minute tell the students to rotate to their left. Once they rotate they should flip over the card on the next chair and check the answer to the problem they just did, once this is done flip the card back and solve their next problem. This continues until all students have rotated through 24 chairs.