If anything, children should be taught about economy first in general and how to be economicall responsible and then later as they are growing up mention Bitcoin, why it has been invented and all the benefits of it.
I wouldn't bother explaining about Bitcoin to anyone below let's say 14-15 because I don't think they would fully understand.
Yes, we can't cram the knowledge that even we ourselves consider difficult, children should be taught the smallest problems starting from their lives, not bitcoin when they are not 18+