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Wear light colored clothing/avoid patterns ( don't wear anything with letters, as they will be reversed in the video)
Plan to record 5-10 min videos
Clean glass after each video (don't waste time erasing on camera)
Plan what you will WRITE ahead of time (keep in mind the limited "real estate" of the glass, etc)
If using the projector with the Lightboard, use only a black background for graphics. Keep text in slides to a minimum.