A presentation is a formal way to communicate ideas, information, and thoughts to an audience. It involves transmitting information orally in a clear, logical structure. Good presentation skills depend not just on what is said, but also how it is said and the presenter's body language. Key elements of an effective presentation include proper planning, preparation, organization, practice, and the use of techniques like signposting, eye contact, and engaging the audience. Presenters should also ensure they speak clearly at an appropriate pace and volume, and are well-rehearsed in their content and delivery.