Microsoft PowerPoint allows users to combine text, graphics and multimedia into a slide show. While you can use the program to create Web pages, teach shapes to kindergartners or help middle school students explore music, its main use is as a presentation tool. PowerPoint’s slide show replaces technology such a chalkboard or an overhead projector to aid someone giving a presentation or leading a discussion. Because every presentation is different, the best way to explain PowerPoint is to have your students develop a speech to give to the class. Writer Bio