In addition to visuals, I always ask questions in the following class on what we covered. For example, I'll ask how the procedure is done of the demo that I did previously did. In this case, the student supplies the answer to me and to the rest of the class. If he or she doesn't know the answer, I ask another student. In rare cases, if no one knows the answer, I reapeat the demo and then have them show me how it's done on the computer.
