Not all kids can easily pick up, just teach them those things that can get by them, the easy ones. And don't force them to learn all things about bitcoin because it might make them disappointed if they will know that it's that hard to earn bitcoin. Make them inspired by those people that get rich because of bitcoin so that they are the ones to know it.
They not all of them are going to have interest on bitcoin. Because we know that kids will just always choose going to play and they really don't care on how things are going. But there are kids that are intelligent and does understand things like the way of living on how to earn with it. Parenthood also a big thing if you kids will have the willingness to know about btc.