what is the basic guidlines in the use of audio visual aids.?

Answer 1

They should add to the presentation, rather than just being there for no good reason.

Visuals should be easily able to be seen by everyone in the room. Use a big font (like 40 point) in preparing overheads or PowerPoint presentations.

Everything should be clean and easy to read.

You should familiarize yourself with the equipment you will be using before using it.