The final element of a winning science fair project is a good verbal presentation. There are two verbal presentations that you will need to plan ahead for. The first is the impromptu presentation that you make to individuals that approach your project at the science fair and there is the formal presentation that you make in front of the judges.
The most important verbal presentation that you will need to make is the formal presentation in front of the judges. This presentation will need to summarize the information in your written report. You will want to explain what your hypothesis was, why you selected it and how you designed your experiment. You will also want to summarize your data and findings. Finally wrap up your presentation by asking for questions. You will need to answer the judge’s questions quickly and completely, so try to anticipate what they may ask so you can prepare answers.
The second verbal presentation that you will need to prepare for is the impromptu presentation that you make to the people that stop by your display. You need to have an abbreviated version of your formal presentation and your responses to them could impact their scoring of your project.
For information on science fair projects and verbal presentation ideas I recommend the science blog offered by Science Base. This blog offers great information that you can use to develop a great science fair project. Another source is either The Student’s Guide to Science Fair Projects (using the scientific method), or The Student’s Science Fair Guide to the Engineering Design Process.