This document discusses the features of a good social science textbook. It begins by defining a textbook as a specially written book containing selective and systematic knowledge about the curriculum. It then lists the purposes of textbooks as helping teachers and pupils, giving minimum essential knowledge, enabling self-teaching, and providing logical materials. Criteria for a good social science textbook include being child-centered, clearly arranged, up-to-date, and containing references for further study. The document also notes some cautions and functions of using textbooks, and lists advantages like planning courses as well as disadvantages like sometimes being dull.