LEXICAL DENSITY OF READING MATERIALS IN ADVANCED LEARNING ENGLISH 1 TEXTBOOK FOR TENTH GRADE SENIOR HIGH SCHOOL

This study deals with the lexical density of English reading materials in the textbook for tenth grade senior high school. The objectives of the study are to find out the lexical density appeared in reading materials of Advanced Learning English 1 textbook and to find out the type of genre which has the highest lexical density of the reading materials. This study was conducted by descriptive method with qualitative approach. The data of this research were the English reading materials of Advanced Learning English 1 textbook for senior high school grade tenth published by Facil. The result of the analysis showed that: (1) The lexical density that used in recount texts are medium and high, narrative texts are medium and low, and the procedure texts is medium. This means that recount, narrative and procedure texts have medium lexical density dominantly (2) The lexical density of recount texts are 54, 91% , 55, 31% and 60, 40%, narrative texts are 50, 96 %, 49, 96% and 55, 17%, and procedure texts are 56, 86%, 59, 78% and 58, 75%. The highest lexical density of the reading text is the recount text with percentage 60, 40%. This meant that the text is the most difficult text to be comprehended in that textbook. It is suggested that further textbook writers to concern with the lexical density of the reading texts so that the textbook can be used and understood by the teacher and the students.