These last from 5 to 10 minutes, when you are expected to summarize what you see as important points and issues on a given topic and set an agenda for the seminar discussion. In addressing other people orally, you must give attention to the process of inter-personal communication as well as to the intellectual content of your message. As in essay writing, this message should be clear to the listener, with arguments flowing logically from one another. For instance, OHP transparencies are useful to indicate your overall plan, emphasize main points etc. Make sure you have mastered the use of the OHP or the slide projector before the session.
Language is other people'.
You are not speaking for yourself but to capture the attention of your audience. Make sure your listeners can follow your argument. The quality of delivery is paramount when speaking in public. You need to project your voice in order to be audible and to keep eye contact with the audience to show you are interested in them as your interlocutors. Body language can help you emphasize your points or on the contrary become a barrier to communication if it distracts the listeners' attention from the topic.