ENGLISH INSTRUCTIONS MEDIA BOOK IN IMPROVING ENGLISH OF ELEMENTARY SCHOOL TEACHERS IN TANGERANG

This research was conducted to improve the teachers' English mastery,
especially in elementary school teachers in Tangerang, Indonesia. The
method of this research was a quantitative approach with a quasi�experimental design by using nonequivalent control group design
(pretest-posttest), to compare the English skill levels before and after
treatment through the English Instructions book. The researcher took
samples of 40 teachers from several Elementary School teachers in
Tangerang. The result of the research found that the average post-test
score of the experimental group was 88.06 and the average post-test
score of the control group was 79.40, which means that there was an
increased score of 8.65 or 11%. The hypothesis of the research stated
that H0 was rejected and Ha was accepted, it means that there were
significant changes in improving the teachers' English skill of
Elementary School using the English instructions book.