A poster should have an eye-catching visual that tells the story ... to make sure the elements required for your presentation, such as projectors, screens and outlets, are available.

with another visual aid, even something as simple as hand illustrating your points on a white board or overhead projector. Each moment in your presentation should be performed like a dance ...

When giving a talk or presentation ... presentations, LCD projector, Power Point and handouts to help you consolidate everything you are attempting to deliver. A visual aid is essentially that ...

As with a lot of classroom tech, overhead projectors declined in use as more high-tech options for classroom visual aids became available. In the 1980s, data projectors that could be connected to a TV ...