How to approach a IDEE?

IB recommends the following process - if you have a good broad topic that can be helped by using two subjects, great! The goal here is not to force an interdisciplinary topic - only choose it if you feel like your topic would benefit from doing it (or possibly, cannot work in just one.) Then, think about what kind of framework you essay would fit under - they are supposed to guide you and help organize your own thoughts. And of course, before anything is finalized, make sure you have conversations with potential supervisors on if they think the idea is interesting as well!