IMPROVING STUDENT’S VOCABULARY MASTERY USING MIND MAPPING AT SEVENTH GRADE STUDENTS IN SMPN 06 KAYAN HILIR

Indra, Yuvinus Herkolanus. 2022, Improving Student’s Vocabulary MasteryUsing Mind Mapping of Seventh Grade Students at SMPN 06 Kayan Hilir. Thesis, English Language Study Program of STKIP Persada Khatulistiwa Sintang. Advisor I: Thomas Joni Verawanto Aristo, M.Pd., Advisor II: Sijono, M.Pd.Keywords : Vocabulary, Simple Mapping This research aims to improve students' vocabulary using mind mapping and to observe the improvement of their participation in the learning process. The study was conducted with 7th-grade students from SMPN 06 Kayan Hilir, with a total population of 30 students. This research uses Classroom Action Research (CAR). The data were collected through documentation and interviews. The documentation was obtained from students' worksheets, while interviews were conducted to identify the challenges students faced in learning English, particularly vocabulary. The qualitative data helped to uncover difficulties students encountered, while the quantitative data were analyzed through several steps: assembling,coding,comparing the data, building interpretations, and reporting the results. The research was conducted in two cycles. In the first cycle, the average vocabulary score of the students was 62.67, with only 33.3% of the students meeting the Kriteria Ketuntasan Minimal (KKM). After the intervention and improvements made in the second cycle, the average score increased significantly to 87.3, with 86.67% of the students reaching the KKM. This shows a marked improvement in students’ vocabulary mastery and indicates that the use of mind mapping in the classroom effectively enhances both learning outcomes and student engagement in the learning process. Based on the findings, mind mapping is a powerful tool to facilitate vocabulary acquisition.It is recommended that this technique be continuously used as a regular part of the learning process, not only for vocabulary but also for other language skills such as grammar and reading comprehension. By adapting mind mapping to different aspects of English learning, teachers can further enhance student engagement and improve overall language proficiency.