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.
Yes, bitcoin is hard to explain so why would you explain it to children? Don't give an idea about bitcoin in children. Let them enjoy their childhood and teach them about bitcoin when they are in the proper or legal age.