Presentation slides are visual aids used during a talk or lecture to help convey information clearly and effectively. They typically consist of a series of individual pages or screens that can include text, images, charts, and graphs. These slides are often created using software like Microsoft PowerPoint or Google Slides. The main purpose of presentation slides is to enhance understanding and retention of the material being presented. They serve as a guide for the speaker and provide a visual reference for the audience, making it easier to follow along with the key points being discussed.