The purpose of this study is: (1) to measure the effects of flipped classroom
on students' vocabulary competencies. The research was to find out whether there are
differences in the results of the students' writing ability test on the subject matter of
the simple present tense between the experimental group and the control group (2) to
measure the effect of flipping classroom on students’ writing competence. The
research was to find out whether there are differences in student vocabulary ability
test results between the experimental group and the control group.
The research used a quasi-experiment in which 60 students from two classes
were involved. The form of research design that is used from quasi experiment is
nonequivalent control group design. The study was conducted in class X TAV as an
experimental group and class X TKJ as a control group at SMK Muhammadiyah
Bumiayu. In the Experiment class flipped learning is treated using schoology,
whereas the control class was conducted through conventional method. Pre-test and
post- test were utilized to collect data. Several prerequisite analysis tests used were
the instrument validity test, the instrument reliability test, the Kolmogorov Smirnov
normality test. Data analysis techniques used to analyze the research data were
descriptive statistics and independent t test analysis with a significance level of 5%.
The results of the study showed: (1) there was a difference in the results of
the students' writing ability test on the subject matter of the simple present tense
between the experimental group and the control group, (2) there were differences in
the results of the vocabulary ability of students between the experimental group and
the control group