Now days we don't even need to teach children much of a thing again regarding bitcoin as educational materials have been made readily available on the internet, which they can just run into.
Using their iPad and browsing the internet saves parents stress, and if the children find the information useful, they can walk up to their parent, their older siblings, or anyone close to them to ask for more knowledge and explanation. That way, it will be easier for one to know where they will focus their efforts explaining to them.
When I saw this thread, I just knew I had read about something of this nature, which got me engaged in the discussion, but checking the link you provided, I still got convinced the more that there are actually a lot of bitcoin animation videos on this forum because the one you shared is just the first time I came across it, but the first one I saw was also a YouTube video, which I can't seem to find a fine link to that thread again. Maybe I didn't search dipper.