I consider on-site visits--by students to locations where they see course contents demonstrated in real life--to be an important part of an on-line course, no matter what the course topic is.
Does anyone have experience with this?
Perhaps students could do an audio-visual project, along with journaling, to apply their knowledge of a course module, lesson or topic, and share it with the rest of the class? This intellectual interaction would test comprehension and provide focus.