Phase 2. Cooperative Learning Group Roles

English as a Second Language ESL science classes. It was shown that the students significantly increased their vocabulary from pre- to post-testing. Furthermore, students in CSR groups spent greater amounts of time engaged in academic-related strategic discussion and assisted one and another while using CSR. 52 The third study was conducted by Mirwan Saputra at the first grade of SMAN 1 Tulang Bawang Tengah, Lampung. In this study, the researcher applied one group pretest and posttest design. After being taught through CSR technique, the researcher draws a major conclusion that there was a significant increase of students’ reading comprehension achievement. The T-test results showed that the students’ mean score of posttest in experimental class was higher than pretest. Thus, the researcher can conclude that CSR is appropriate and effective to be used in increasing students’ reading comprehension achievement in all level education. 53

F. Theoretical Hypothesis

There are two kinds of hypotheses which can be estimated here, those are: H 1 : By using Collaborative Strategic Reading CSR technique, it will improve the students’ achievement in reading comprehension of narrative text. H : By using Collaborative Strategic Reading CSR technique, it will not improve students’ achievement in reading comprehension of narrative text. From the basis of problem of the study and theoretical framework which have been started, the researcher draws the hypothesis of the research which can be started as follows: 52 J.K. Klingner, et al., Collaborative Strategic Reading during Social Studies in Heterogeneous Fourth Grade Classroom.The Elementary School Journal, volume 99 no. 1, 1998. 53 Mirwan Saputra, The Implementation of Collaborative Strategic Reading Technique in Increasing Students’ Reading Comprehension Achievement at the First Grade of SMAN 1 Tulang Bawang Tengah. “By using Collaborative Strategic Reading CSR technique, it will improve the students’ achievement in reading comprehension of narrative text at the second grade of SMA PGRI 109 Kota Tangerang.”