There are so many other games that (in my opinion) better embody the sorts of lessons TFA describes. I feel something less commonly associated with gambling would be even better than poker. I remember as a kid I went to a summer camp and brought a set of poker chips and some cards in my bag to play purely for fun with people during some free time. My parents asked me to not do that and later let me know that some other kids' parents had taken issue with their kids "gambling".