The kids in school are more likely to understand Bitcoin than most adults imho. Most adults don't even understand domain names, and that is virtual property.
I agree with this. More likely to find a younger person that knows about bitcoin than older.
This is an overall interesting concept to have Bitcoin toys so that children get used to playing with them as money. As children we all played with games with money so why not Bitcoin. There could be game apps for children as well that reward them in fake bitcoin, this would give them an opportunity to understand the math. The sooner you reach children the better, with anything.