The presentations for this course should be considered as 'professional' presentations, and as such should follow appropriate guidelines (i.e., they should approach the level of an academic conference presentation).  I have found some materials on the web that describe various aspects of presentations.  Although they are not all aimed at 'academic' presentations, they are useful materials for you to review.

Visual guidelines for presentation materials
Effective presentation guidelines
Evaluating an effective presentation

You should consider the following material in preparing your presentation.

Presentation Considerations

• Introduction of Topic: Clearly state your name and the topic at the beginning of your presentation.
• Objectives: You should clearly state the objectives of the paper and the importance of GIS to those objectives.
• Order of Presentation: You should follow a logical sequence in making your presentation. Carefully review your presentation and ensure that you haven't left anything important out (such as the where the study took place).
• Effectiveness of Visuals: Visual aids should support the presentation.
• Speaker Voice Quality and Style: You should treat this presentation as a professional assignment. You will be judged on how well you present the material, your voice quality, eye contact, and response to questions.
• Quality of Visual Aids: The visual aids should be carefully prepared, with some attention to quality (e.g., check for typos!)
• Summary and Conclusions: A strong summary is essential for any presentation. After presenting the facts, state your conclusions clearly and concisely.
• Question and Answer Session: You should be prepared to answer questions.