Quizzes, tests, exercises and puzzles for English as a Second Language (ESL), English as a foreign language (EFL), Teaching EFL (TEFL), Test of EFL (TOEFL), English for speakers of other languages (ESOL), Teaching ESOL (TESOL), TOEIC.
Its always good to do a run through or even a couple of run throughs the night before the presentation. This can help with both your timing and your manner of presentation. Be sure to make mental notes if you went on too long or got nervous or stuck. Some people find it useful to have a friend pretend to be the audience: He or she can build up your confidence and maybe even ask a question or two.