Do not use a lot of fancy powerpoint presentations. Better to show a movie. Do not read your overheads to the kids, they can do that, and its boring. Discuss the content, and use the overheads to keep you on track and as a check that you have covered all the points you wish to put across. Keep your message clear and give good information. Use actual references to situations when making your main points. Illustrate with your experience, and allow some examples from the floor. Good eye contact with your students is important. Watch for puzzled looks and seek out those students afterwards, they may not have understood and be too embarrased to ask. Use some positive emotion do not be a bland speaker. If you are asked a question you do not know the answer to, note the student and say you will look up the answer afterwards and pass it on. Do not try and bullshit your way through...Do not make excuses for problems, humour is a better alternative.. Yours,Aye Dave