Your answer to, "What exactly was the “new math?” was spot on. I was a product of the 1960s educational system, and my daughter was in grade school in the 1990s.
I remember that in the fourth grade, mid-term, the teacher took our math books and announced that we would be using different math books, and learning the “new math.” This was in 1967.
My education in mathematics pretty much stopped there for many years. I simply could not understand the bizarre concepts that were being taught.
The summer before I started college, I decided that I must become competent in math. With the help of math books written in the forties and fifties, I learned math from simple arithmetic to algebra and trigonometry in three months! Math books written in the sixties and seventies were just gobbledygook…they didn’t make any sense at all.
In the late 1990’s I looked at my daughter’s math book. I opened her math book, and by chance, opened it to the first page of a particular chapter. It was all about “poor Juan” and his sad life in Central America. I said to my daughter, “This is your Social Studies book, I want to see your math book”. She informed me that I was looking at her math book. I looked closer, and it was indeed a math book, but the beginning of every chapter had several pages describing the life of some third-world child. After that, it showed poorly explained mathematical concepts.
If any of you out there have children that are failing math, please do them a favor. Find math books that were written before 1970, and preferably before 1965. This may sound like conspiracy theory looniness, but I believe that the objective decline in American education is due to the intentional influence of leftists on our educational curriculum. Please, do not let you, or your children, become victims.
LINK TO COLUMN: What exactly was the “new math”? - The Straight Dope