With a seemingly endless supply of clip art on the Internet, you might think there are images available to suit every application and occasion, but that isn't always the case. Just ask anyone who's ...

Projectors have come a long way over the past 20 or 30 years. After spending the first decade of my teaching career using overhead projectors, I do not miss having my fingers covered in red, green, ...

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 ...