How I Use It
I use it in class to introduce new topics.
Prezi allows you to create different spaces and therefore to represent graphically the complexity of your topic and the interrelation between different ideas, trends etc.
Prezi is very flexible so that to use it at its best you need both to plan the overall view, the details and the relations between the different elements.
I ask my students to create presentations for a wrap up.
I sometimes copy someone else's Prezi and adapt it to my lesson plan.
A very attractive way to present complex topics. You can give it any shape you like which allows you to make your presentation more significant. You can give an overall view as well as a detailed one, so that the understanding your students get is both global and detailed which is quite the teacher's dream.
The only drawback is that it is rather long to create but the result is well worth the effort.