The Time Timer Plus, 20 Minute offers a greater visual impact for shorter duration needs such as completing blocks of homework, homeschool learning sessions, silent reading, instrument or sports practice, as well as 15- to 20- minute activities for kids. Sometimes an hour is too much time, the Time Timer Plusn 20 Minute packs all the features that have made visual timers the first choice of teachers, students, parents and professionals into a 20-minute timer.