I had an interesting idea the other day. When tutoring, I'll sometimes ask students how they learn best, and I'll get a confused or surprised look. Often they just don't know or have never considered the question. Perhaps it would be easier to ask them what methods aren't helpful. In a larger setting (like a high school classroom), perhaps it would be even more effective to get them to show you.
The scenario would play out thus: Students would be asked to brainstorm things they know a lot about. From this list, they would choose something to explain to the class. The catch: they need to teach it badly, so that no one (except perhaps those equally familiar with the topic) would understand it. I imagine this would elicit a parody of poor or unhelpful teaching techniques, some of which a teacher may not be aware of. After a few presentations, other students could be asked to analyze common themes in the presentations and explain why they had trouble following the ideas. What could have been done to explain the topic more clearly? From there, the teacher will be able to deduce what kinds of techniques will and won't be effective with this particular group of students.
(Note: This isn't my official post for Unit 1, although it is something that got dislodged as I tried to think about the question: "What is learning?" Sometimes you have to think about what it isn't first.)