Early for children. I do not think kids need to teach bitcoin, they have to learn to continue with real money. After that, we can teach them something about the coins because it's better to tell them that they need to focus on the crypto. kids love fun.
in fact, it is very difficult to teach them to look for bitcoin when they are under 13 years old. well, I think they need more play and study with their friends. maybe after the age of more than 13 years, they will be easy to learn this.
