<![CDATA[The objectives of the research are to find the significant difference on students’ vocabulary understanding after using YouTube Tutorial videos and students response toward the use of YouTube Tutorial videos. The population of this research was the third grade of students of SMP Negeri 4 Bandar Lampung in the academic year 2022/2023. The sample was class IXA which consisted of 30 students. The method of this research was quantitative with the research design One Group Pre-test and Post-test Design. The researcher used vocabulary test consisted 30 questions pre-test post-test to measure the significant difference and the questionnaire to find students response in the process of data collection. The researcher used SPSS and MS.Excel to analyze the data after those data has been collected. The result showed that there is a significant difference on students vocabulary understanding. The increase from the mean score was 13,6 where Post-test is 75,3 while the pre-test 61,7. The questionnaire distributed to students draw positive response where students who answered positive 25 students and negative 5 students, and the total of students response reached 64,26. The significant difference score demonstrates that using Youtube Tutorial video in the classroom has affect students ability to comprehend the vocabulary better. The result from the questionnaire percentage showed that students felt happy and enjoy the learning process using YouTube Tutorial video.]]>
