LEXICAL COHESION IN MATH BILINGUAL TEXT BOOK OF JUNIOR HIGH SCHOOL

The objectives of this study are to derive the pattern of cohesive relation in math bilingual textbook and to reason for the contextual elements encapsulating the pattern. The data are collected by using documentary technique in lexical cohesion only. The source of data was taken from Mathemathics for Junior High School year VII which is published by Yudhistira. There are three topics were studied that represented from whole topics, they are Integers, Algebra and Applications and Planes. The sentences were analyzed by using cohesion theory by Halliday and Hasan (1976). After that, the data were presented by using Sudaryanto (1993) analysis. It began from identifying the data that are needed for this research, classifying the data based on the lexical cohesive in pragmatic, and analyzing the data based on the theory that is used. The findings are (1) Lexical Cohesion in Math Bilingual Text book is dominated by repetition (2) Repetitions occurred to emphasize the previous explanation and explore them in detail explanation (3) Collocations in Math Bilingual textbook occurred to make the contrast between two terms hence the explanation is clearer. It is often occur as antonym or pairs (4) Super ordinates in Math Bilingual textbook occur to inform part of a term in Math (5) Synonyms in Math Bilingual textbook are used to give another name and to explain its terms, symbol or a pattern (6) There are two genres in these data, they are Explanation and Procedure. As a result, the lexical cohesion in Math Bilingual Text book has a pattern which consist of four elements in lexical cohesion, they are: Repetition, Synonym, Super Ordinate and Collocation. From all elements, the dominant element of lexical cohesion was repetition both in Bahasa (36.50%) and English (39.74%). In addition, The four element of Lexical cohesion occurred in Math Bilingual Text book have the main purpose to build the reader understanding about the explanation and information of terms, kinds or elements, and symbols.