the overhead projector

THE OVERHEAD PROJECTOR

OVERHEAD PROJECTOR

- is a most widely used audiovisual device in classrooms, business and other corporate films.

Advantages:

Unique features of the overhead projection system give it wide versatility. Among these are:

a) It allows direct eye contact by a presenterwith audience;

b) The equipment is usually lightweight, portable and easy to operate;

c) A variety of materials can be projected consisting of notes, diagrams, overlays( transparencies laid on to show steps in a process.) Part of the messages can be covered to reveal information progressively.

Limitations

Overhead projection presentations rely mainly on the presenter and it is mainly designed for group presentation.

Printed materials and non-transparent items, such as magazine illustrations cannot be directly projected unless these are copied into acetate by an acetate copying process.

Among effective ways to use overhead projection are:

AV SHOWMANSHIP

Avoid using projector as doodle pad for random notes or verbal cues. Use chalkboard instead.

Shift audience attention to you as presenter by switching off the projector as during topical changes in presentation.

Use a pointer(laid at transparency) to direct attention to parts of your transparency. Don’t point at the screen.

Reveal information by making (covering) part of your material with a sheet of paper or cardboard.

Use a two projectors to cover secondary issues, Dual presentations may be helpful in multilingual presentation.