Abstract :
Vocabulary is a fundamental skill in learning English, crucial for
developing reading, speaking, writing, and listening abilities. This research
investigates the effectiveness of the Quizlet application in students?
vocabulary mastery among first-grade Culinary Art students. Based on the
problems, the purposes of this research are: 1) To know whether the
Quizlet application is effective in students? vocabulary mastery at first
grade Culinary Art of SMK Muhammadiyah 3 Metro or not. 2) To find out
whether there is significant effectiveness the Quizlet application is
implemented in students? vocabulary mastery at first grade Culinary of
SMK Muhammadiyah 3 Metro. This research use quantitative quasi
experimental as a research design, the research involved pre-test and
post-test with two classes: an experimental class (Culinary Art 1) using
Quizlet and a control class (Culinary Art 2) with traditional methods. The
sample comprised 30 students. Pre-test results revealed mean scores of
69.13 for the experimental group and 66.40 for the control group. After
treatment, the experimental group?s mean score increased to 88.80,
compared to 80.13 for the control group. Statistical analysis showed a
significant difference, indicating that the Quizlet application substantially
enhances vocabulary mastery. The results of the experimental class are
significantly higher than the pre-test, this research also show that using
Quizlet is effective in increasing students' vocabulary mastery. The
researcher hopes this research motivates students to actively engage in
vocabulary learning using interactive media like Quizlet. This can enhance
their enthusiasm and improve their English language outcomes.