[Phiwise_]

Plus, if you are looking to teach a child interested in programming specifically, you might consider Snap/Build Your Own Blocks [0], an extension of Scratch made partially by an instructor of SICP at Berkeley to support things like anonymous functions, prototypes, and metaprogramming. It seems robust enough a child given it now could get right up to undergraduate introductory CS as the genuine article! I would have been amazed if any of the systems to enable kids to make games of my childhood (which I did get a pretty unrepresentatively bad batch of besides) had that kind of potential to them. Imagine a high schooler today reading, say, a blog post about their favorite game's scripting system for its quest designers and implementing its high level beat for beat themselves. Sure it'll run disappointingly slow but the education potential is immense.

[0] https://en.wikipedia.org/wiki/Snap!_(programming_language)