The objective of the research was to study the effects of using vocabulary games
for improving vocabulary knowledge of Prathom 6 students of Praram 9 Kanjanapisek School.
The pre-test and post-test examinations and self-reflection form were the instruments of the
study. The sample of the study was the 40 students from a room of five rooms which were
chosen by simple random sampling. The procedures began with the class orientation followed
by taking pre-test examination, teaching vocabulary through game, taking post-test
examination, writing self-reflection form by 3 most-developed, medium-developed and leastdeveloped
students and finally analysing data. The experimental period of the study is 6
weeks, 3 periods a week, of the second semester of 2012 academic year, totalling 18 periods.
The findings were the post-test score of most students were higher than the pre-test score and
the self-reflection forms from the 9 students reflected in the same way. The game helped
them to remember more words. Therefore, the students’ vocabulary knowledge was improved
after they studied through games. The awareness came from students and teacher’s
experiences such as classroom management, clear instruction and motivation could be
mentioned as the tools of successful lessons