I can confirm that my maths teachers at primary school were terrible: if you stepped a little bit outside what’s in the book, they were absolutely lost.
They were a lot better in secondary school, possibly because they had a much stronger mathematical education (secondary school teachers usually have a university degree in the subject they teach or in a closely related field, at least in my country).
I also absolutely agree with what you say about overconfidence and the need to revisit a subject / layer instead of thinking “it’s over for good”.
I can confirm that my maths teachers at primary school were terrible: if you stepped a little bit outside what’s in the book, they were absolutely lost.
They were a lot better in secondary school, possibly because they had a much stronger mathematical education (secondary school teachers usually have a university degree in the subject they teach or in a closely related field, at least in my country).
I also absolutely agree with what you say about overconfidence and the need to revisit a subject / layer instead of thinking “it’s over for good”.