THE USE OF VOCABULARY.COM TO INCREASE STUDENTS VOCABULARY MASTERY: A CASE STUDY OF THE FIRST GRADE STUDENTS OF SMAN 3 PATI
Keywords:
vocabulary mastery, Vocabulary.com, digital learning toolsAbstract
This study examines the use of Vocabulary.com to improve vocabulary mastery among firstgrade students of SMA N 3 Pati. It uses a mixed-methods research approach, combining quantitative preexperimental design and qualitative interviews. Thirty-five students from Class X-9 take part in the
research, which includes pre-tests and post-tests, along with two weeks of lessons using Vocabulary.com.
The platform provides adaptive learning, engaging quizzes, and immediate feedback, offering an
interactive learning experience. The pre-test results show low vocabulary scores, with only 10% of
students meeting the target. After using Vocabulary.com, post-test results indicate significant
improvement, with 80% of students achieving or exceeding the target scores. The paired sample t-test
gives a significance value of p = 0.000 < 0.05, showing a statistically significant difference in
performance. The N-Gain score of 60% suggests moderate effectiveness in improving vocabulary
mastery. Qualitative data reveal that the platform increases student engagement and motivation. The study
concludes that Vocabulary.com is an effective tool for enhancing vocabulary learning in high school
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