Efektivitas Pembelajaran Kooperatif Ditinjau Dari Peningkatan Kemampuan Penalaran Logis Matematis Siswa

The research problem is the lack of logical mathematical reasoning abilities of students. This study aimed to describe the effectiveness learning cooperative in terms of improvement of mathematical logical reasoning abilities of high school students. This form of quasi-experimental research design with pretest-posttest control group. Sample size was 38 students were taken proposive sampling of two classes of students at a private school in South Halmahera. This study has two variables, namely: cooperative learning as independent variables, and logical mathematical reasoning abilities of students as dependent variables. Instruments used for data collection is a logical mathematical reasoning ability tests. Primary data were obtained from the application of the test instrument, were analyzed using a statistical test of the One-Sample Test at significance level α = 5%. The results showed that the logical mathematical reasoning abilities of high school students through cooperative learning reaches 74.97% in both qualifying and the increases were relatively high 0.72