When preparing transparencies, use a variety of colors and no more than six bullet points per page. Use large type that is easy to see and read from a distance when it is projected on the screen. Place a piece of paper underneath the first transparency so the screen is blank and dark even when the projector is turned on. Slide the paper to reveal one bullet point at a time. Judge from the audience s reaction when to move to the next bullet point or topic. Use blank transparencies with multicolored felt tip pens for spontaneous writing and to encourage participation from the audience.