I think someone could create a game about it , a game composed of story telling which as they progress they get to know more about different angles of bitcoin world which could be useful when they grew up 
Oh, this is good, you think like a computer engineer. Well, its not presenting the core of the bitcoin but the basic concept of it. That you can earn coins if you create or answer the problem, just like that ,then you can buy or cash it out.What do you think about teach kids make money very soon while children still very young and not enough age for do that?
I think we should teach kids learn knowledge about the virtues and morals of life instead of Bitcoin knowledge.