Avoiding Transparency Ghosts
I’ve printed permanent text on some of my transparencies, which I use and re-use periodically with my classes. I like to use a non-permanent marker to make notes and comments during instruction. The problem is that it can be time consuming and difficult to clean them and fully remove the temporary markings — they’re mostly clean, but there always seem to be ghostly traces of my “temporary” markings left behind.
Here’s what I do now: Instead of writing on the transparency itself and trying to wash off the temporary markings, I write on excess laminating film, which I’ve paper-clipped overtop the printed transparencies. No more washing transparencies and especially, no more ghost writing where I’ve used purple!