Role of the Researcher The Data of Research

non-experimental methods, yields qualitative data, and provides an interpretive analysis Grotjahn 1987:59-60 in Nunan 1992:6. Since this study compares the lexico-grammatical features of reading texts in text-types materials in the two English textbooks, so this study is a comparative research. The two conventional types of comparative analysis focus on the explanation of differences, and the explanation of similarities Pickvance, 2005:2. It means that I explained the differences and similarities of the lexico- grammatical features of reading texts in the text-types materials in When English Rings A Bell and Bright English textbooks for grade 8. This study also analyses the appropriateness of text-types materials in those two textbooks based on the Curriculum 2013.

3.2 Subjects of the Study

The subjects of this study are reading texts in the text-types materials in English textbooks When English Rings A Bell English textbook, published by Indonesian Ministry of Culture and Education, and Bright English textbook, published by Erlangga. Both English textbooks are for grade 8 and composed based on the Curriculum 2013.

3.3 Role of the Researcher

In qualitative research, the instrument or research tool is the researcher himherself Sugiyono, 2012:305. The qualitative research as the human instrument, has function to decide the research focus, select source of the data, do the data collection, evaluate data quality, analyse the data, interpret the data, and make the conclusion of hisher finding Sugiyono, 2012:306. Since I am the researcher in this study, so I am the main instrument. I have the duty and full dominance in doing this research from deciding the research focus until making the conclusion of my finding.

3.4 The Data of Research

The source of the data in this research are in the form of descriptive, recount, and narrative texts as the materials presented in When English Rings A Bell and Bright English textbooks for grade 8 respectively published by the Indonesian Ministry of Culture and Education and Erlangga. The data in this research is in the form of qualitative data which explaining the researcher‟s finding. In this research, I tried to find out the appropriateness between text-types materials in When English Rings A Bell and Bright English textbooks for grade 8 with the Core and Basic Competences of text-types in the Curriculum 2013. I also tried to find out the differences in lexico-grammatical features of reading texts in the text-types materials in both English textbooks. In this research, I observed, analyzed, and interpreted the data. I got the data after read and observed the reading texts in the text-types materials in When English Rings A Bell and Bright English textbooks for grade 8, and found out to what extent the text-types materials in those two textbooks are appropriate with the Core Competence and Basic Competences of text-types in the Curriculum 2013. I also analysed the differences of lexico-grammatical features of reading texts in the text-types materials in those two textbooks.

3.5 Procedure of Data Collection