It wasn't so much poor teaching as it was me not being able to understand the subject no matter how it was thaught. Well, it might have been some sort of vicious circle, as in my dyscalculia made me give up on learning anything math-related. I guess you could call it ''poor teaching'' if you count ignorance and the insistence that I was just ''refusing to learn''. You're right, though, it doesn't really bother me anymore, other than the number it did on my self-esteem.