The most effective way to demonstrate and teach computer software is by means of a monitor projection panel. The panel is placed on top of an overhead projector and connected with cables to a computer. Everyone sees every keystroke and every result. It is best if the instructor asks someone else to do the keyboarding so that the instructor always faces the audience and can therefore be heard, and so that no keys are pressed without the entire audience knowing about it. The instructor announces the keys to press and then the audience sees that action on the projection screen.
Color models are available but are quite expensive.
It is useful to use two overhead projectors if transparencies are to be shown along with the displays using the panel. This is because the two uses require different focusing, and the overhead projector would have to be re-focused frequently to accommodate this. Transparencies are needed in teaching Personal File in order to show the many screen printouts. Reports that print at 17 cpi will not display properly with this option. They often contain reports on information shared at the meetings and announcements of upcoming meetings and speakers.