The Effectiveness of Using Vocabulary Self-Collection Strategy (Vss) on Students’ Vocabulary Mastery at the Eighth Grade of SMPN 23 Kabupaten Tebo

Vocabulary mastery is very important when learning English. Vocabulary mastery determines four language skills because it is impossible to use language skills fully when students have limited vocabulary in their minds. Students feel confused about the meaning of a word, have difficulty remembering some vocabulary and students are less interested in learning English subjects. This happens because students do not master English vocabulary well. So students' vocabulary mastery is still relatively low. To overcome this problem, researchers used VSS in English language learning. This research aims to find out whether there is effectiveness in using VSS on students' vocabulary mastery. This research data was collected in 2024 in the second semester. The sample for this research was 26 class VIII students. The method used in this research is a quantitative method with a pre-experimental design, one group pre-test post-test. The results of the post-test were an average of 78.65. These results were calculated using the SPSS application where the tests analyzed were normality and Wilcoxon tests. Based on the Wilcoxon test, the result obtained is 0.000, which is a value smaller than 0.05. Thus, the results of the research that has been carried out conclude that VSS is effective for mastering the vocabulary of students in class VIII SMPN 23 Tebo Regency.