Inspirational Phase

One of my ideas that i thought of after looking at the "Layar" site was an application that could scan the walls of a classroom. On the walls, would be pictures of famous historical features and buildings. Each one would come with a question. Using the app, you scan the image or QR codes to be brought to a page detailing about the picture. This could be a biography, or a story about the building. In it will be the answer to the question on the wall. You then type out the answer on the wall and the image will disappear. The aim of the game would be to make all the images disappear so you can start fresh on the new world, after knowing your history! I think it could be a good idea if done right!