This clip shows how an AP Government class changed their curriculum to model project Based Learning (PBL). It would be fun to figure out how to do this in World 9 or 10 or even AP World.
The AP Government class made the change with the help of the University of Washington and some high school teachers in nearby Bellevue, Washington. They used scores from the PBL class and compared them with scores from the traditionally taught classes. The idea was to give students a more in-depth look at government than a traditional AP class can give. You can read and see more about PBL at this Edutopia site.