Although PowerPoint presentations are designed to be shown on a computer screen, you might want to print some items related to the presentation. For example, as you design your presentation, you can enter notes related to each slide that you create in the Notes pane. These notes can then be printed out and used during the presentation.
Using speaker notes helps you keep on track during the presentation and provides you with the information that you want to present related to each slide in the presentation. When you print your notes, each slide is printed on a separate page with the notes printed below the slide.