Abstrak
This study aimed to find out the effectiveness of animation video on vocabulary learning. This research was due to some problems that were found during preliminary research. First, teachers find it difficult to carry out continuous learning because sometimes the students did not focus on learning if just use the books, and doing another activities when learning process. Second, the students had lack of motivation and seem less enthusiastic when learning process. This research used a quantitative descriptive approach to examine the use of using animation videos on vocabulary acquisition among Grade VIII students at SMPN 3 Lembah Melintang. The population included all 81 students, with purposive sampling selecting class VIII.1 as the study sample. Data collection instruments included multiple-choice vocabulary test. The vocabulary test, consisting of 20 multiple-choice questions, was scored out of 100. Content validity was ensured by consulting English education experts, while construct validity and reliability was done using SPSS. The findings show that students' vocabulary mastery, measured through scores on a vocabulary test, demonstrated a mean score of 90.58, with scores ranging from 80 to 100. The majority scored between 88-91. The quantitative data analysis indicates that students achieved a high level of vocabulary mastery, with a mean score of 90.58 which fall to the very effective category, suggesting a solid understanding of vocabulary concepts after exposure to the animated videos.