%A 1113042026 Erlin Arisca %T IMPROVING STUDENTS? VOCABULARY MASTERY THROUGH STORY COMPLETION TECHNIQUE IN SPEAKING ACTIVITY %X Speaking is one of the central elements of communication. By speaking, the students can express their ideas. However, most of the students still have difficulties in their speaking skill and get difficulties in composing their own words. Then, learning speaking cannot be separated from vocabulary because speaking itself consists of many vocabularies which make language. It is an impossible to learn language without vocabulary. Therefore, English teachers should be able to provide the best method that can improve the students? vocabulary mastery. The researcher tried to propose story completion as a method to improve the students? vocabulary mastery. The aim of this research was to find out whether there was a significant improvement of the students? vocabulary mastery after they were taught by using story completion. This research was quantitative research which used one group pretest posttest design. The population of this research was the second year of the students of SMPN 2 Kotagajah. The sample of this research was VIII A class which consists of 30 students. The data were analyzed by using t-test formula in SPSS 20.00 for windows. The result of the research showed that there was a significant improvement of the students? vocabulary mastery after they were taught by using story completion. It could be seen from the result of the mean score from the pretest to the posttest, which was 76.09 in the pretest and improved to 89.04 in the posttest. The statistical result also proved that the students? scores improved significantly because t table (10.333>2.045), p<0.005 (p=0.000). According to the data, it can be concluded that there was a significant improvement of the students? vocabulary mastery from the pretest to the posttest. %C UNIVERSITAS LAMPUNG %D 2015 %I FAKULTAS KEGURUAN DAN ILMU PENDIDIKAN %L eprints11701