Here are a couple Aurasma related video walk-throughs. The first shows showing what a multiple overlay aura will look like via Aurasma and the second shows any Aurasma user how to embed multiple overlays on a single trigger image in Aurasma Studio. Using multiple overlays on a single trigger image allows users to explore several aspects of a single topic or unit.
Add a Google doc or link to your Moodle/Blackboard/Angel page with its own open ended questions, essay questions, or a tasks can add even more depth to this project. Student can also make their own multiple overlays as a stand in for those boring power point presentations.