Mutia Nasution
The background of this research was students' achievement in vocabulary mastery in High School 1 Padangsidimpuan was not suitable to the expectation and their achievement was in low score. The purpose of this research was to find out the significant effect of TGT Method toward vocabulary mastery at the Tenth grade students of High school 1 Padangsidimpuan. The population was all of the Tenth Grade students with 298 students. The sample was 67 students which took by cluster sampling. This study was conducted to find out the cause and effect relationship, the research method used was experimental method. Then the data was collected by using instrument. The instrument used was multiple choice test. And to analyze the data the writer used statistic process, they were descriptive analysis and inferential analysis by using t-test formula. And from the data that has been collected, it was found that the result showed the score of ttest >ttable (2.68 > 2.00). It means that there is a significant effect of TGT method toward vocabulary at the seventh grade students of High School 1 Padangsidimpuan. © Published under licence by IOP Publishing Ltd.
Universitas Negeri Medan, Sumatera Utara, Indonesia
