While data projectors are popular tools for business meetings, the overhead projector still has some significant benefits. For interactive presentations, an overhead projector lets you write directly ...

Whether you give presentations for a living or attend them only at seminars, you've probably sat through hours of digital slides and scenarios, overhead-projector transparencies and bullet points.

A key to keeping students on task is closing their window of opportunity to get off task. And never is that window more wide open than when you turn your back to write on the board. Case in point, my ...

Slide shows and overhead projectors with images that are crooked, upside down, mirror imaged, or simply lost, are well and truly a thing of the past. Data projectors suited to PowerPoint presentations ...