children doesn't need to know about currency,but teenagers does,and i think there's so many explanation video in youtube so don't wasting effort wasting your time when you can just give them about the link of video so they can learn from it,whether they will be interested or not,it's definitely depend on them
I've done this. Most of my friends "understand" bitcoin after watching some of the videos. The problem comes when the want to know more, especially about the technology itself. I don't know any videos that can teach properly about it.