Bitcoin is hard to explain. I also experienced difficulties in understanding bitcoin for the first time. Let's share how to explain bitcoin to children of teenagers. In my country, I can say that 98% of children do not know bitcoin. In fact, bitcoin can be future money. If children are not familiar with cryptocurrency or bitcoin, how they might face the digital age in the future.
Its simple, just tell them that the future of currency would be from the cryptocurrency and it is inevitable,tell them how bitcoin was created,on what purpose and how it works.. Be simple and straightforward im sure younger kids today would get it minus the long explanation.
I believe its much more easier to teach younger individuals rather than older folks. Older people tend to ask too many questions and believe me,many of these questions are all mixed-up with skepticisms and sarcasms.
Aside from that, they only knew and believed about paper money and would only stick to that old system.
Unlike younger people, they're way more easier to convince because they are eager to learn and most of the kids today knew how to used computers and the internet.