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

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

6. Among effective ways to use overhead projection
are:
 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.