The Influence of Using Realia on Students? Vocabulary Mastery at Junior High School (A Quasi Experimental Research at the seventh Grade Students of Mts Al- Husna Lebak-Bulus

The purpose of this study was to determine whether the use of realia can be influential in the development of vocabulary in students at Al-Husna Mts- Lebak Bulus. In this study the Researcher limited the mastery of vocabulary in the aspect of sense (meaning). The writer makes hypothesis that, the influence of using realia in teaching vocabulary can increasing the students' vocabulary mastery. Quantitative methods with quasi-experimental design that used as research methods in study. The subjects were two classes of students, in seventh grade at MTs Al-Husna Lebal-Bulus 2014/2015 academic year consisting of 64 students. In the study to teach vocabulary the researcher used the realia and translation as media of learning. The study was conducted in two classes, i.e. in the experiment class the researcher using realia as a medium of learning and using translation as a learning medium in the control class. Each class consists of three stages of the process that providing pre-test, treatment, and post-test. In the data collection techniques the writer uses a test that consists of pre-test and post-test. In analyzing the data, the results showed that the students' vocabulary mastery of the experimental class is increased as indicated from the value of the pre-test and post-test. The average value of students in the pre-test and post-test on the class experiment increase of 71.44 into 89.90. And the control class students' average score increased from 72.82 when pre-test be 73.76 while the post-test