DIFFERENCES BETWEEN STUDENTS MARK TAUGHT WITH CO-OPERATIVE LEARNING MODEL TYPE TGT WITH GUESS THE WORDS MEDIA COMPARED WITH STUDENTS MARK TAUGHT WITH CO-OPERATIVE LEARNING MODEL WITH WORDS SQUARE MEDIA IN HYDROCARBON SUBJECT

The purpose of this research is to resolve the differences between students mark taught with Co-operative Learning Model type TGT with Guess The Words media compared with students mark taught with Co-operative Learning Model with Words Square Media in hydrocarbon subject. The population used in this research is the whole 11th grade in SMA Negeri 18 Medan that consist of 3 classes of 110 students in total. The sample taken for this research is obtained by random sampling technique from 2 classes, first class as experiment I, second one as experiment 2. Each class consist of 40 students. The first class of experiment 1 is taught using the Co-operative Learning Model type TGT with Guess the Words media. While the second experiment class taught using the Co-operative Learning Model with Words Square Media. The result shown that, students on experiment class 1 have average pretest score 29,25 + 8,74 and, post test at 81,50 + 6,52 with gain 0.75. Meanwhile, the students on experiment class 2 have average pretest score 34,13 + 9,73 and post-test 82,50 + 6,60 with the average gain 0,74. The statistic test result using t both classes with the gain data obtained that point t-hitung at 2,222 while t-tabel point at 2,021 at significant level 0.05, therefore t-tabung》t-tabel. It Shows, there’s a difference between students mark taught with Co-operative Learning Model type TGT and Guess The Words media compared with students mark taught with Co-operative Learning Model and Words Square Media in hydrocarbon subject.