The Effect of Word Chain Game to Students’ Vocabulary Mastery at Grade VIII of SMP N 5 Padangsidimpun

This research describes about students’ problems in vocabulary mastery. It was solved by choosing an appropriate game that is Word Chain Game. There were some problems in this research: 1) Lack of motivation in learning vocabulary, 2) Lack of vocabularies, 3) difficult in memorizing a new vocabulary. The purpose of this research is to know whether there is the effect of Word Chain Game to students’ vocabulary mastery at grade VIII of SMP N 5 Padangsidimpuan The method that is used in this research is experimental research. The population of this research is all of the eight grade of SMP N 5 Padangsidimpuan that consist of 265 students. Then, the sample of the research was 2 classes, VIII 5 as experimental class that consist of 28 students and VIII 4 as control class that consist of 28 students. The data was derived from pre-test and post-test. To analyze the data, the researcher used t-test formula. Based on the calculation of t-test, the researcher found that tcount = 9.09 and ttable = 1.67356. It means tcount> ttable (9.09 > 1.67356 ). So, the researcher could concluded that Ha was accepted and Ho was rejected. There was the significant effect of using Word Chain Game to students’ Vocabulary Mastery at grade VIII students of SMP Negeri 5 Padangsidimpuan