Each student gets a paper and is in a group of 4. Set a timer for each question. Have the students solve number 1 on their own paper. When the timer goes off, they can rotate their papers one person to the left and continue with problem two on a teammates paper. Continue the process until all the questions are completed. At the end, give the students time to discuss and go over all the answers. Have them staple their papers in the end and turn them in.