In a previous post on June 24th titled “Don’t be a flipchart Charlie” I discussed that simple visual aid. For larger audiences another possibility is to use an overhead projector. Like flipcharts they are relatively simple to use. Visuals can be produced “on the fly” with just a few pieces of transparency film and markers. Transparencies also can be made using a copier or a computer printer.
Lenny Laskowski has some good suggestions on using overhead transparencies. There also is a more printer friendly version elsewhere. More tips for overhead projector use are in a newsletter from the NIH Evening Speakers Toastmasters club.
If you are using lots of overhead transparencies, then you will need to make sure there is enough table space next to the projector to shuffle your “deck” into two stacks of unused and used transparencies. Before you start you will need to check if there is a spare bulb ready to use. (Some projectors carry a spare and a flip of a knob will instantly change lamps).
OSHA has a 1996 vintage page on Presenting Effective Presentations with Visual Aids which discusses overhead projectors and other aids.