Largely because American's believe they understand the educational process (largely based on their own anecdotes) better than experts.
The particular reason people struggle with algebra is because it is one of the first fundamentally abstractionist topics taught in schools. There is a huge cognitive development and experiential component.
Delaying teaching algebra makes cognitive developmental sense, but it is also inherently intertwined with with race, class, and gender for a bunch of reasons that get a lot of people really angry.
The particular reason people struggle with algebra is because it is one of the first fundamentally abstractionist topics taught in schools. There is a huge cognitive development and experiential component.
Delaying teaching algebra makes cognitive developmental sense, but it is also inherently intertwined with with race, class, and gender for a bunch of reasons that get a lot of people really angry.