The strengths and weaknesses of radio

I have to bear in mind that the radio show is not a classroom.

Things that work well in the classroom do not translate into the radio format.

In the classroom, I

In the classroom	On the air
"Silence is golden."	Silence is dead air.
I have the same students, day after day. I expect them to remember the last class and plan on seeing them again to follow up on this class.	Every unit must be self-contained. It has to stand on its own legs because the listeners come and go as they please. I have to supply--briefly!--whatever is needed to understand what I'm saying when I'm saying it.
I can correct and augment what I am saying through body language, homework assignments, handouts, and the use of the chalk board. We can read texts together and long pauses while the students struggle to answer questions about the text are very appropriate for the classroom setting.	Our listeners listen when, where, as they can. I cannot expect them to follow complex exegesis. Keep it super simple!