Also it should not also be a matter @what age the program should start. It should be working on it in the first place.
I believe it will be all fun for them also, just some complicated subjects they have been doing.
I believe education is a key metric every kid need in their life and there are ways anything can be broken down into tiny pieces for children to learn and understand. I have seen Bitcoin for kids in this forum and it was a book that contain some diagrams for them to understand what Bitcoin is all about, more that can be simplify for kids to learn and understand with attaching wealth to it, it's the future and better they know it before they become an adult.
As time goes on, the hard aspect of Bitcoin can be simplify for them to learn just like the way Learnmeabitcon.com did on his website, from beginner class to technical aspect and I must tell you, everything on that page looks self understanding. Similar thing can be done for kids but this comes with the government approval, without their approval it wouldn't be possible.
Children may like simple and straightforward resources. If they are provided with these resources, they can learn about a particular topic. In fact, I am against pressuring children to learn something. If children are curious about something, it means that they are interested in that subject and it is better to guide them in the direction they are interested in.
Education is important at any age, but the subject of education is more important. It may be more beneficial for parents to guide their children according to their curiosity.