It’s wierd isn’t it. We actually know how to teach children to read, do math, etc. and have known for centuries. Yet the theorists are constantly trying, badly, to re-invent the wheel.
The reason we've slipped so bad is supposed to be because of our antiquated methods of teaching mathematical concepts. This is something I have seen first hand.
Frankly, I felt betrayed when as a returning college student I FINALLY learned the genius behind Cartesian Coordinates is it lets you solve geometry problems using algebra. Before the advent of the graphing calculator I was taught these things in isolation from each other.
——the theorists-—
That’s how they get plastic Masters and Phd’s in education
That’s the way they get more money
The quality of the educational product is not relevant. The educational system is for the educators, not for the students