Richard Byrne and I were teaching our third of three technology for the Social Studies classroom today when a teacher asked me how I keep my students on task in a flipped room. One trick I mentioned is countdown timers projected on the front of the classroom. Believe it not the kids sense the time restraints. Like anything it isn't good to do it every day, but can be one trick in your hate. Here are several types and the one above is what Richard suggested.