This research was aimed at improving students’ vocabulary mastery through
Word Wall.
The subject of this research was 26. The method which was used is CAR.
The data were collected through test, observation, field notes and questionnaire.
To perfom this research, the researcher worked collaboratively with English
teacher in the class investigated. This research took two cycles with two actions in
each cycle. Each cycle consisted of a learning planning, acting, observing and
reflecting.
Based on the data analysis, it could be proved that the use of Word Wall as
the medium can improve students’ vocabulary mastery, because 65% of the total
participants in this research reached the minimum achievement standard (KKM)
that is 70. It could be seen from the result of students improvement at the end of
Cycle 2. The improvement of the test result was 27.87%. The indicator of
students’ observation proved 23.59% from the action in Cycle 1 and Cycle 2. The
result of the field notes showed that the research in Cycle 2 was better than the
research in Cycle 1. Moreover, the questionnaire result showed a positive
response of the students towards the use of Word Wall in learning vocabulary. In
short, Word Wall was able to improve students vocabulary.