Planning a presentation or talk is like building a house. Without the initial blueprints or plans, there can be no house. Without a solid framework for the structure, the house, like a presentation, cannot be built without major problems occurring.
Without clear planning or preparation, you may find yourself going round in circles with your ideas in a mess. Your house, like the presentation, may become unstable and your ideas shaky because of poor groundwork; if you do not follow your plans step by step, you may end up off course and confused (not to mention your audience as well).
Therefore, spending time on planning and preparation is a must.
The Research Phase
You need to do your research first. This means spending time collecting and investigating the facts and gathering background information about your topic. You may need to spend some time brainstorming ideas, doing research and searching for information (in the library, on the internet etc).
At this stage you need to ask yourself what the argument and purpose of your presentation is to inform, persuade, argue etc.
Example: