Question

you observe that many of the students in your class and school throw/discard their books and notebooks without any consideration after the final exams. Some of the books and note books are in rather good condition and can be used by anyone. Discuss with your partner.

Answer 1

Yes it is wrong to throw/discard your books away if they are in good condition.
Those books can be used by yourself or your brothers or sisters in the coming years or you only can use it for some pictures for the given projects.
Even for some information these books can be used.