Tales out of high school - the overhead projector

Does anyone else remember overhead projectors? This piece of equipment is - or was - ubiquitous throughout elementary, high school and a smattering of college courses, never to be heard from again once one enters the workforce (unless one was teaching). In any case, you combine one of these glorified flashlight and mirror machines with a transparency and voila - you had the stone-age version of a PowerPoint Presentation.

( Read more... )