This book is concerned with improving the writing skill of students of English as a foreign language, and there are several techniques and ways to achieve the desired goal, including the jigsaw technique. Jigsaw is one of techniques that belongs to cooperative learning by which it was developed by the social psychologist Aronson and his colleagues at the University of California. This book deals with Jigsaw IV, Haliday's model. There are certain steps considered important in the implementation of the jigsaw classroom:1. Students are divided into 5 or 6 persons in a jigsaw group. The group...