This domino activity covers the concept of arithmetic and geometric sequences and series. The 12 problems include finding the first four numbers in a sequence, finding the sum of a series, and determining what type of sequence a given set of numbers is. Each student or group (based on teacher discretion) gets a set of dominoes. Students need to find the one that says start and work that problem. Then, they have to match the problem with the correct answer. That “answer” domino contains the next problem, which then matches with its answer. Each student/group will eventually have a string of dominoes in the correct order.