Hmm, this is a good idea to start from and would make learning what is BTC easy and fun, +1 for this project.
Maybe you can create a mini-platformer game like Mario where there are questions (pops up when you hit the question block in Mario), and you have to enter the correct 'pipe' which has the answers on them.
Or if you do not want to gamify it some much, then perhaps a simple quiz where you choose an answer, but you make animations to make it interactive.
If I think of any better idea I'll let you know again.
What content do you have currently? E.g. Questions/Info you would be giving in the guide