What device did you get your nephew? When I was looking for one, those listed on the Make Code website were pretty bad and expensive (or unavailable). I would love to find an affordable retro handheld like Miyoo or Anbernic with Make Code support.
replyI got the Elecfreaks Retro Arcade for Education, I'm sure it's not as bulletproof as an actual Gameboy so he uses it with his parents around rather than taking it everywhere with him, but it works!
replyRoughly how old was your nephew when he started using MakeCode?
replyI think four for scratch junior with help, and then make code at six? He wasn't able to use either of them independently at first, it's a learning process.
replyBut it's different for every kid! He was a very early reader and he's autistic, one of the markers of his presentation of which is being ahead of some developmental benchmarks and behind on others. If you have the resources, those kids coding clubs are all over these days and they do a great job of making it a fun, social activity for a certain type of dorky kid.