As Joe said...the first nite I write this site's web address on the whiteboard for the class. I give them info for the State Board; address, phone and web.
I teach Basic Electricity, and/or Basic Wiring at a County Vo-Tech, and Basic Electricity is a little dry. Ohm's Law, series, parallel, and series-parallel circuits, power, and Vd. I break it up a lot with discussion on everyday trade subjects, and throw in a video or two during the 13 nites. (Courtesey of Bussman)
I'm setting up a Power Point presentation for next semester, to reduce 'board time'.
John