When I taught ground course;
I used to have students that were so busy with being on the social networks, instead of learnign the lesson, so what i did i started to walk around the class room, and began to involve those students in the discussion by making it very funny, and interesting and I spoke in the ling that they understood. then I would relate this to the lesson, and I also bring in real world in the class room.
I have really enjoyed this course