JELE JOURNAL OF ENGLISH LITERACY EDUCATION, VOL. 3, NO. 2, NOV. 2016 148 USING THINK-PAIR-SHARE-STRATEGY TO IMPROVE VOCABULARY AND READING COMPREHENSION ACHIEVEMENTS OF EIGHTH GRADE STUDENTS Kiki Rizki Amelia Ogan Komering Ilir Islamic University Abstract: This study was aimed to find out whether or not think-pair- share strategy: (a) improved eighth graders` vocabulary achievement, (b) improved eighth graders` reading comprehension achievement, (c) made a difference in the vocabulary and reading comprehension achievements between the experimental group students (those who were taught by using think-pair-share strategy) and those of the control group students (who were not). In conducting the study, think-pair-share strategy was applied in the experimental group, but the control group did not get any treatment. Seventy students were assigned in two groups, with 35 students in the experimental group and the other 35 students in the control group. To collect the data, vocabulary and reading comprehension tests were used. The collected data were analyzed by using paired samples t-test and independent samples t-test. The findings of the study showed that there were (a) an improvement in eighth graders` vocabulary achievement, (b) an improvement in eighth graders` reading comprehension achievement, and (c) a significant difference in vocabulary and reading comprehension achievements between the students who were taught by using think-pair- share strategy and those who were not. Therefore, think-pair-share strategy seems effective for the teaching reading as well as vocabulary. Key words: think-pair-share strategy, vocabulary and reading comprehension achievements, eight graders English is widely spoken that It has often been referred to as a "world language”. Most people in the world use English as a Second Language or Foreign Language. In Indonesia, English is very important because knowledge of English gives prestige as well as a means of personal advancement in the professional and academic fields (Swan & Smith, 2001, p. 279). It seems that English is an important thing for supporting the quality of Indonesians` human resources. In Indonesia, English is considered as the first foreign language to be taught from junior high school level to university level. As stated in the standard of content, English is studied at junior high schools (Peraturan Menteri Pendidikan Nasional, No 22, 2006). It is needed to be taught to junior high school students because it is the basic element for the higher level in further education. In other words, English is regarded as one of the important subjects that should be mastered by Indonesian students.