Those phenomena then evoke the researcher to do this research. Since When English Rings the Bell is a new textbook, this research tries to elaborate the
vocabulary items used in the textbook and their suitability to help teachers make decisions of how to use the textbook to support students’ learning achievement.
B. PROBLEM LIMITATION
In this research, the researcher limits the research study of textbook evaluation, focusing on vocabulary. Particularly, this research will deal with
vocabulary coverage types, tokens, word family and word recycling word frequency and the context on a certain textbook. This limitation aims to obtain
deeper investigation and discussion. Some limitations should also be considered in this research. First, the
interpretation is done by the researcher and it may be subjective, although literature review is also used. Therefore, triangulation is used in form of expert
check to minimize subjectivity. Second, the scope of this research is only vocabulary. It does not cover other scopes in textbook evaluation such as learner’s
roles, teacher’s roles, learning activities, pictures, and texts. Third, there is no exact picture of what JHS students in Indonesia need and want dealing with
vocabulary. The exact level of their vocabulary is also unknown. Moreover, the difference of their background knowledge is very various and diverse. Thus, the
interpretation result cannot be generalized in world reality happening in Indonesia.
C. PROBLEM FORMULATION
This research aims to address these two following questions: 1. What is the vocabulary coverage of Junior High School textbooks?
2. How are the words recycled?
D. RESEARCH OBJECTIVES
This research deals with vocabulary which is used in Junior High School textbook. It aims to investigate the vocabulary coverage and word recycling in the
JHS textbook. In particular, this research is intended to reach the subsequent objectives: 1 to find out the number of types, tokens, and word families in JHS
textbook and its implication and 2 to explain how the words are recycled and in what context they are recycled and its implication.
After the vocabulary coverage and words recycling in JHS textbook are revealed, teachers are hoped to put enough consideration and pay close attention
to the content of certain English textbooks, especially the vocabulary, before they pick one of them in order to meet students’ needs and wants. After picking a
textbook which is considered the best for the students, every teacher should also take another decision whether to supplement, adopt, or adapt the textbook.
E. RESEARCH BENEFITS
