If you're looking for a way to liven up your home's walls you can easily and inexpensively paint decorative accents if you have access to an overhead projector. Just photocopy the pattern you want ...

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, ...

Overhead projectors are useful tools to present large visuals in the classroom or boardroom, but poor care and the temperature of the machine cause possible risks to your health and safety. To ensure ...