Abstract:
The limited mastery of Indonesian vocabulary among foreign speakers
is a major obstacle in the learning process of Bahasa Indonesia for
Foreign Speakers (BIPA). This research aims to improve Indonesian
vocabulary mastery of foreign-speaking students through the
application of interactive visual media at Nida Suksasat School,
Thailand. The study employed a Classroom Action Research (CAR)
method using the Kemmis and McTaggart cycle model, comprising
planning, action, observation, and reflection stages. The research
subjects were 32 foreign-speaking students participating in Indonesian
language learning. The research was conducted in two cycles
following a pre-cycle stage to identify students’ initial vocabulary
mastery. Data were collected through vocabulary tests, classroom
observations, and learning documentation, and analysed using
descriptive quantitative and qualitative techniques. The results
showed a significant improvement in students’ vocabulary mastery,
with learning completeness increasing from 31.25% in the pre-cycle
to 62.5% in the first cycle and reaching 87.5% in the second cycle. In
addition, the use of interactive visual media positively affected
students’ motivation and active participation in learning. Therefore,
the application of interactive visual media is effective and feasible as
a learning strategy to improve Indonesian vocabulary mastery for
foreign speakers.
