No need to tell them how to get income from Bitcoin, how to mine Bitcoin, or how to invest because we know they won't be able to accept it.
We only need to do a playing method that includes Bitcoin characters in the game, such as using the Bitcoin logo in a guessing game, or other games.
There are still many ways that can be done.
I also won't burden my child's mind with the knowledge that they shouldn't know yet, this is just an introduction.
When you teach children, you must simplify things as most as possible. They need to start with very simple things and they don't need to understand what they see, what they listen to at the first time. They can slowly digest information with time but they are like white papers and can learn very fast. Like they learn to open and watch Youtube and the likes.
I agree with you that if we teach children, we should not teach things about money, they should not touch money when they are children like how I was taught in my childhood. I could be wrong but I support this education approach and don't want to make my children becomes addictive with money, how to get rich and the likes.