They have an Android tablet of their own that I've configuredb strictly for child use and it has helped them learn many things easily using apps such as Khan Academy Kids and Duolingo Kids. There is precious little beyond that that is not not infested with ads or needs subscriptions that are bound to cost a lot in the long run.

I have an old machine with Debian connected to my TV that I can also attach a PS3 controller to, if needed. What software can I explore in the Debian world that can help my child continue her learning journey. I'm open to suggestions not just for learning tools, but also for games that might help.

PS: they get plenty of outside time too, so that's not a worry. I just want them to explore things and discover things they might like. I'm amazed by their ability of assimilate stuff so any help about diverse things like gamified music theory, art, logic will be highly appreciated.

Cheers!