How so? I'd appreciate you expanding on it, as well as responding to the existence of these:

Teaching Haskell to a 10 year old[0]

Realm of Racket[1]

Land of lisp[2]

0: https://superginbaby.wordpress.com/2015/04/08/teaching-haske...

1: http://realmofracket.com/

2: http://landoflisp.com/