“…Also interject other types of activities. There are several effective instructional strategies to consider, including the personalized system of instruction, response cards (i.e., cards or signs that students hold up in unison to instructor's questions), case simulations, small group intervention projects, frequent exams, SAFMEDS, and graphing activities (e.g., Heward, 1994;Lindsley, 1983Lindsley, , 1993Lloyd & Lloyd, 1992;Malott, 1984;Michael, 1994;Potts, Eshleman, & Cooper, 1993, for additional information).…”