It is necessary to provide full support to children by teaching them some basic knowledge that they are interested in. This will be an additional lesson for children so they can understand the activities carried out by their family members.
In my opinion, it is okay to teach Cryptocurrency to children from an early age, the important thing is never to force them to be what their parents want them to be. If they have a desire to learn then teach them slowly.
There's a good and bad side about it since it's a children they can also make some mistakes even adult people, it is better to guide them well and teach them first the basic knowledge or experience then, let them discovered it to their own so that they won't depend on you.