Different Resources for Each Slide or Scene?

Adding to what Judy said:

• If you wanted, you could add your resources as a layer on the slide and then create button to that layer.
• Or, create a lightbox slide for each question's resources and then use a button on the quiz to open the resources.
• Another option is to create a simple index.html file that holds resources and insert that as a web object. The web object can be loaded locally, so you don't need to put the HTML page on a server.
• If you wanted to get creative, there's a way you could leverage Rise to build your resource page and load that as a web object. 

In either case, you don't need to build three separate projects. That seems like a lot of extra work and not necessarily going to give you anything different since they're all being authored in the same tool.