To use a visualizer/ document camera / visual projector to display and share an information to whole class. AIM: To use a Visualizer/ Document Camera (visual projector) to display and share an information to the whole class. HOW TO USE A PROJECTOR: Turn on the computer or video equipment you want to use before you turn on the projector so that it can display the image source. A visualizer (sometimes called a document camera) lets a teacher display something small to a whole class via a PC and projector. This means that a teacher can demonstrate to a whole class something which would be difficult to show to a whole class without the whole class gathered round a table vying for space to...