Comment by DonHopkins

Everything you can do with Scheme you can also do with Snap! with a visual blocks programming user interface. Functional programming, recursion, higher order functions, closures, continuations, macros, metaprogramming, all described by Brian Harvey's curriculum, the Beauty and Joy of Computing:

https://bjc.berkeley.edu/team/snap/

Snap!Con 2025 - Brian Harvey - ACM Karlstrom Award Address

https://www.youtube.com/watch?v=pDK2PE_pkqQ

Brian calls SICP the actual best computer science course ever invented, which is quite a complement from the guy who wrote the second best computer science course ever invented. ;)

He has a lot of interesting thoughs about AI in education.