Learning Media Glossary (Clive Shephard)

A medium for projecting still images on a screen. OHP slides can be drawn by hand using felt tip pens, produced with a photocopier or generated using a computer printer. Unlike 35mm slides, OHP slides are placed on the projector manually, one-at-a-time, but have the advantage that they can be created in real-time or revealed gradually through the removal of a mask.