TEACHING DIPHTHONG SOUNDS THROUGH TONGUE TWISTER GAME TO THE ELEVENTH GRADE STUDENTS OF SOFTWARE ENGINEERING PROGRAM AT SMK NEGERI 3 PALU

This research aims to prove if using Tongue Twister is useful in teaching
diphthong sounds to the eleventh grade students of Software Engineering Program
at SMK Negeri 3 Palu. The writer applied a quasi-experimental research design
which involved experimental group and control group. The sample of this
research was selected by using purposive sampling technique. The samples of this
research are class XI TRPL B as experimental group consisting of 29 students and
class XI TRPL A as control group consisting of 24 students. In collecting the data,
the writer gave pre-test and post-test to both classes. The data were analyzed
statistically. The result of the data analysis shows that there is a significant
difference between the experimental group pre-test and post-test results where the
mean score of both tests in experimental group significantly improves from 57.54
to 68.10. It is also shown that the t-counted value (4.27) is higher than the t-table
value (2.008) which indicates that the research hypothesis is accepted. In
conclusion, tongue twister game is useful in teaching diphthong sounds