MindMap needs the ability to have rich content associated with each node

As an educator, I have different content that is all interrelated. I would love to have the content topics all connected through a mind map. When I’m talking about circles, I might also want to talk about triangles, or I might want to talk about periodic functions. So, I would like to connect all these topics together in a mind map. But I also want rich content associated with each node. I would like to be able to double click a node (or choose a menu option) that then displays all the rich content associated with that topic. 

Also, if this is not possible today with MindMap, how could I go about creating a similar solution with the existing set of tools?