Comment by jacobolus

There are a bunch of Kolmogorov essays that might be relevant, judging by their titles.

https://www.turpion.org/php/reference.phtml?journal_id=rm&pa...

Perhaps "On the school definition of identity", Matematika v shkole 1966

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Maybe a Russian speaker wants to go search? There doesn’t seem to be an English translation of most of Kolmogorov’s essays online.

https://www.google.com/search?tbm=bks&q=Математика+в+школе+К...