As a German living in the Western part, my math teacher would always rant how much better the East German math books were. Math and science education in the Soviet Union and the Eastern Bloc was and still is vastly superior to anything we had or have in the West.
See also this thread: https://news.ycombinator.com/item?id=26849866#26850468
Maybe I looked at the wrong ones. Your link seems to suggest that it's different for textbooks aimed at young children.
Can you give me some examples of good East German higher math or physics books? I'd like to have another go at it.
A good example of a introductory book with good didactic is Probability Theory (first steps) by Wentzel. https://archive.org/details/ProbabilityTheoryfirstSteps/mode...
Also Physics of Everyone, though maybe a bit more difficult: https://archive.org/details/LandauKitaigorodskyPhysicsForEve...
Link to all the Mir titles: https://archive.org/details/mir-titles
There are books for basically every level and age there.
It seems like in the 90s and 2000s a lot of math books started being written by pure mathematicians who don't care about the applications of mathematics.
Edit: For example, books like this: https://www.amazon.com/-/es/Gregory-Grant/dp/B08FP7SNZJ
> In addition to well-explained solutions, this manual includes corrections and clarifications to the classic textbook Linear Algebra, second edition, by Kenneth Hoffman and Ray Kunze.
It had worked examples, basic theory from foundation up, and was absent all superfluous info.
I credit it to passing my course and getting to where I am today. I still have it in my office to this day.
So maybe kids has problems focusing partially due to modern pedagogy? Every word you write down has a cost to the reader, and the less attention span the reader has the more that cost matters. Drown them in too many words and they will just zone out since their attention span didn't last long enough for them to reach the important parts of the text.
As long as you know what a derivative is, all integral and vector calculus is just a comination of “look at the problem with an infinite loupe and then add all those values “.
DiffEq is more or less similar.
Classical maths was very well taught: examples and applications galore.
I've read math textbooks from the 60s onwards. I do not see a trend vs time.
The text covers a lot of ground very quickly omitting a lot of "pure math" details.
The thing is that most applications are just ordinary things: tou are not going to go much deeper than angular momentum and/or the Stoked-Gauss theorem for electric-magnetic fields.