Any File wrote:
This definition is not only , in my opinion, not only cumbersome, but also open a serious question: What is a textbook?
Just as an example why a cookbook is not a textbook? In many school cookbook are used as a textbook. Morover they are used in some small lecture course about cooking. What should be consider as a textbook? Just what is normally used in American High school?
A joke book could be a text book for a writing course or a drama course about stand-up comedy
And should the subject only be limited to normal subject textbook are written about?
For instance there exist a lot of book about chess (and many of them not only dealt about chess, but are even organized in lesson). Anyway I have never seen a textbook about chess (because chess is not taught at school).
There have beenany number of self-teaching books about chess. One type has you following a game, and rates you on the move that you would make in any given position. Chess may not be a part of the standard curriculum in American high-schools, but there are private schools and schools in other countries which consider chess an important tool for developping critical thinking.
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