As someone who did A-Level Maths, and is a major fun love Maths guy, I don't think much any of it has relevance to most peoples' lives. Admittedly the 'proofs' more than anything might be a cool way to teach critical thinking.
The headers definitely undersell the difficulty of the content, they are not middle-school level. I was deemed the most mathematically exceptional in my classes, and Maths A-Level was hard. Anyone still struggling with Maths at GCSE stage will not get much further being forced to sit in A-Level classes..
As someone who did A-Level Maths, and is a major fun love Maths guy, I don't think much any of it has relevance to most peoples' lives. Admittedly the 'proofs' more than anything might be a cool way to teach critical thinking.
The headers definitely undersell the difficulty of the content, they are not middle-school level. I was deemed the most mathematically exceptional in my classes, and Maths A-Level was hard. Anyone still struggling with Maths at GCSE stage will not get much further being forced to sit in A-Level classes..