PENGGUNAAN UMPAN BALIK DARI TEMAN SEBAYA DALAM MENINGKATKAN PENGUASAAN KOSAKATA SISWA KELAS SEBELAS DI SMA NEGERI 1 PALASA

The objective of the research isto provewhetherthe use peerfeedback can enhance
vocabulary mastery of grade eleventh students at SMA Negeri 1 Palasa. The
researcher focused on action verbs and common nouns. In this research, the
researcher used a quasi-experimental design. The researcher used Peer Feedback
as a media. The experimental group consisted 20 students, while the control group
consisted 22 students. The instrument in collecting the research data was a test.
The test was given to students twice as pre-test and post-test. The data were
analyzed statistically. Students’ mean score of experimental group of pre-test
(44.83) and post- test (85.83) is 41. While the control group of pre-test (48.94) and
post-test (67.27) is 18.33. It means that Peer Feedback is significantly improve
students vocabulary mastery of the eleventh students at SMA Negeri 1 Palasa.