Abstract:
This study aims to examine the effectiveness of Augmented Reality (AR)-based learning media in enhancing
English vocabulary mastery among eighth-grade students at SMP IT AL-IHYA. The research employed
Classroom Action Research (CAR) following the Kurt Lewin model, conducted in two cycles. Data collection
involved observations, interviews, pre-tests, post-tests, and documentation. The results showed a significant
improvement in students' vocabulary mastery. The pre-cycle average score was 64.48 with only 24% of students
reaching the minimum mastery level. After the implementation of AR-based learning in Cycle I, the average
score increased to 70 with 40% of students achieving mastery. In Cycle II, the class average rose sharply to 87.4,
with 100% of students achieving mastery. Observation of student activity also improved, from 52.38% in the pre
cycle to 85.7% in Cycle II. Based on the N-Gain Score of 0.645, the effectiveness of the intervention was
categorized as moderate. These findings suggest that AR-based learning not only improves vocabulary mastery
but also increases student engagement in the learning process.
