As a teacher, I think the best way to get kids interested is games. Gamification is a trending pedagogical method in my country’s formal educational system. In fact, I just came from Damus, a Nostr relay, because I was playing some word games on Cowdle. It’s similar to Wordle, except that I have to guess a six-letter word correctly. Pretty addictive, not least because I can get up to 250 sats if I guess a word right.

You may also want to look into Zebedee. I haven’t played the games there yet but seems like one can stack sats through games like Sudoku.