October 17, 2002
I never clean transparencies! I keep a roll of Saran Wrap by my overhead projector. When I want to use a transparency, I simply roll the wrap over the transparency that I placed on the overhead, and then I write on the wrap. When I am done, I just roll the wrap back off, put my next transparency down, and pull more wrap over the next transparency. I use a permanent marker as it is brighter and left-handed people don't erase their work. One big roll from Sam's Club will last many years.