Karya Tulis Ilmiah yang merupakan Hasil Penelitian Berjudul IMPROVING STUDENTS’ VOCABULARY MASTERY USING JIGSAW TECHNIQUE AT EIGHT GRADE STUDENTS, ditulis oleh Dosen Program Studi Pendidikan Bahasa Inggris Fakultas Keguruan dan Ilmu Pendidikan Universitas Bale Bandung, Agus Kusnandar dan dibantu oleh seorang mahasiswa yang bernama Umar Al Ikmal.
The aim of this research is to improve vocabulary mastery of Grade VIIID of SMPN 2
Baleendah using jigsaw technique. This research applied the principle of experimental
research. Vocabulary is the core of the language that students must master. In which fact
many students in the school are lack of vocabulary. There are many methods can improve
their vocabulary mastery, and the researcher applied jigsaw technique. The steps of this
research were giving pre-test, four times treatments, and post-test to collecting data. Giving
questionnaire to students in the last section was to find out students’ responses about
studying English using jigsaw technique. The participants of the research were the students
of Grade VIIID of SMPN 2 Baleendah. The quantitative data were obtained from the
students’ vocabulary mastery score of pre-test and post- test. T-test is used in this research
to count the data. The results of the research show that using jigsaw technique can improve
the students’ vocabulary mastery and the students’ responses are good because the findings
reveal two results. First, the use of jigsaw can improve students’ vocabulary mastery which
is 13.725 exceeds the table critical value of t= 2.021, at p= .05 with df= 40 (13.725>2.021).
Second, there were 95% of students’ responses said that they are happy to study English
toward the application of jigsaw technique.
Keywords: jigsaw technique, vocabulary mastery, experimental research