Overhead Transparencies

 Transparencies are cheap, simple to use and could be easily made on the computer. It is easy to update and maintain them; it also limits the information shown at one time.  Despite of its ability in giving a professional look to the presentation, it is thought to be an outdated method. During projection, transparencies provide poor reproduction of the photos and graphics. They demand the speaker to stand next to them, making him/her stick to one point during the whole presentation.