The right age I agree with you if our children are 16 years old we can educate them about crypto and start teaching them to trade with small capital, for example $ 10. Because by training them early on will grow good intuition in the future with expertise and knowledge about crypto trading.
Yes, 16 years old is appropriate age for learning about crypto or Bitcoin. In this age, someone is already a senior high school student. But we must understand that we don't need to force them to learn a lot of things about Bitcoin or crypto. Just gradually educate them, they may need to understand it slowly. Agree, training them early can make them to have good intuition. But we must consider many things in educating them.
A 16 years old is no longer a child, but a teenager, there is a clear difference between being a child and a teenager, and what the subject of this thread says is if it's OK to educate children about bitcoin, children are from 3 to 12 years old, at this age, I would say it's not OK, bitcoin education requires a brain that is well developed, at the age of 3 to 12, children should be allowed to focus on their studies, thats the most important thing at that time.
Then from 13 years of age, the child has been a teenager, and now can start Learn other things that is outside his or her education in school.
So, as from the age of 13 up, I believe it's ok to start bringing up bitcoin into our conversation with them, this is to arouse their curiosity, then we can start teaching them at the age of (let's say) 14 and 15, then as from the age of 16, we can make provisions for them to start learning on their own, and also assist them in making their first trade and so on.