Need to address whole group behaviors? Use these mystery motivators to encourage positive behavior. Cut out the "Mystery Motivator" slip and glue it onto the back of an envelope. Each day, change out the class rewards. At the end of the day, reveal if students can participate in the mystery motivator or not, based on whole class behavior. Typically, I would judge if all students ended the day on green and there were not complaints from specials/cafeteria.