Prezi can be used for presentations and note taking equally, and one can morph into the other.
If a student uses Prezi to take notes in a project, then they can eventually use the same Prezi to show the class what they learned.
If a teacher shares the Prezi with students, they all can contribute to a project for an idea think tank.
Here's an example of a Prezi I have done before.
http://prezi.com/1ouxtoh4of0n/?utm_campaign=share&utm_medium=copy&rc=ex0share
