How I Use It
I use this mostly for creating presentations that go with my lessons. There is definitely a learning curve to figuring out how to get everything aligned well, as well as effective use of zooming and turning the screen. It is helpful if students are aware of and have used a program like PowerPoint before so that they have some background knowledge to work with.
Prezi is definitely an interesting tool to use for presentations. If the presentation is well designed, it can help keep students engaged because they will be guessing what kind of move the screen will make next. That said, it can also distract students from the content of the lesson. Students enjoy getting creative with the presentation, but teaching students how to create with it takes a lot of practice and direct instruction.