I think the author of The Magic Coin is also the author of a series of economics books for children. My kids are too old for that kind of book now so I just encourage them to read What Has Government Done To Our Money? whenever I get the chance and two of them have, it appears. One is into BTC and is an OG BTCer and the other is reading other Austrian economics books (mine). So, I know this kind of approach to economics works. Another good book to start teenagers is Hazlitt’s Economics in One Lesson.