My 9 and 12-year-old sons have been exposed to bitcoin for 3 years. We had a blast winning the Old to Satoshi video contest in 2014. They arent' power users yet, but more importantly they're on the edges of the conversation everyday. I've been thinking about the best way to teach my sons about money for a long time and developed the Magic Money system to incentivize their investing. They earn their own money and spend it on as many things as their budget allows while reinvesting in a perpetual system. It's like a modified 3 jar system where they split up cash into save, spend and share jars while magically receiving "tooth fairy-like" interest in a 4th jar. Old rail banking discriminates them from getting a checking account and Visa debit card so their learning is limited.