Use a large font - we recommend 36 to 40 point, and bold. Use a dark background with light colored type. Good contrast helps readability. There is a document camera in the room. It will display images printed on 8 x 11 paper or transparencies.
Paper works MUCH better because transparency film catches the ceiling light and creates a glare.
Print your graphics on paper, using a color printer if you have access to one. Graphics from books and magazines also work well. The document camera has a zoom lens which you will control by pushing a button on the camera. We will show you in advance how this works. You may also write on paper and use the document camera.