in k-12, its usually based one book, that almost never changes edition, or very little, and the schools doesnt put money towards newer updated material.
most of the classes require questions answered specific from the book like most hw, or whatever questions derived from that specific book particularly. thats why its hard to get by without a book.
when the info is all over the internet, or in random books, students might not be able to connect all that info together. most students need some kind of info all in one book to learn and anything unclear then they look at online resources or other books. maybe your countries universities present thier lectures differently.
but when professors lecture with only slides, people rarely learn from them, because they are very basic and generic and often unhelpful for the most part, its almost exclusively done by professors that cant be bothered with teaching a class, rather do research instead.(not all but most of them are like this).
plus new books/classes often come with a required online component, where you get a special purchased code to use, and its part of your overall grading system in the class.
it maybe EU/germany professors lecture slides differently than the us. the prof here just do it lazily while barely explaining the material, and already expected the students to know the subjects.
in k-12, its usually based one book, that almost never changes edition, or very little, and the schools doesnt put money towards newer updated material.
most of the classes require questions answered specific from the book like most hw, or whatever questions derived from that specific book particularly. thats why its hard to get by without a book.
when the info is all over the internet, or in random books, students might not be able to connect all that info together. most students need some kind of info all in one book to learn and anything unclear then they look at online resources or other books. maybe your countries universities present thier lectures differently.
but when professors lecture with only slides, people rarely learn from them, because they are very basic and generic and often unhelpful for the most part, its almost exclusively done by professors that cant be bothered with teaching a class, rather do research instead.(not all but most of them are like this).
plus new books/classes often come with a required online component, where you get a special purchased code to use, and its part of your overall grading system in the class.
it maybe EU/germany professors lecture slides differently than the us. the prof here just do it lazily while barely explaining the material, and already expected the students to know the subjects.