Finland tried teaching maths to children using Group Theory in the 70s [1], but the results weren't that good; it proved to be too abstract for young kids.
Ultimately, I believe basic algebra and geometry are the most important takeaways from math classes for most people.
Ultimately, I believe basic algebra and geometry are the most important takeaways from math classes for most people.
[1]: https://www.hs.fi/tiede/art-2000004823594.html (sorry, it's in Finnish and behind a paywall)