Menggunakan Strategi Pembelajaran Kooperatif Untuk Meningkatkan Keterampilan Menulis Siswa Kelas Sepuluh SMA Negeri 7 Palu

The objective of this research is to find out if using Cooperative Learning Strategy
can improve students’ writing skills of grade ten students at SMA Negeri 7 Palu.
The researcher applied quasi-experimental design with two classes, experimental
class and control class. The experimental class consisted of 34 students and control
class consisted of 35 students selected through cluster random sampling technique.
In collecting data, the researcher administered pretest and posttest to both the
experimental class and control class. The data were analyzed statistically in order
to find out the significant difference of students’ achievement before and after
treatments. Using 0.025 level of significance and 67 degree of freedom (df), the
researcher found that the value of t-table was 1.998, which was lower than the t-
counted 3.57. It means that the hypothesis is accepted. In other words, using
Cooperative Learning Strategy can improve students’ writing skills.