Tujuan penelitian ini untuk mengetahui pengaruh model pembelajaran kooperatif tipe group investigation (gi) terhadap kemampuan berpikir kreatif siswa kelas x sma frater don bosco tarakan. jenis penelitian ini adalah eksperimen semu dengan populasi siswa kelas x dan sampel sebanyak 2 kelas. teknik pengambilan sampel menggunakan purposive sampling. data dianalisis menggunakan software spss 16.0 for window. teknik analisis data menggunakan uji independent sample t-test. berdasarkan hasil analisis data dapat disimpulkan bahwa terdapat pengaruh penerapan model pembelajaran group investigation terhadap kemampuan berpikir kreatif siswa sma frater don bosco tarakan, karena nilai thitung 13,772 pada taraf signifikansi 0,05 dan dk= 68 diperoleh nilai ttabel 2,000 berarti thitung > ttabel .

This research was aimed to find out the effect of cooperative learning model to the result of ten grade students of sma frater don bosco tarakan. this is quasi-experimental research (quasi experiment), and the population for this research was the students of ten and the sample was taken from two classes. the sampling was done by purposive sampling. the data were analyzed using spss 16.0 for windows software. the data were analyzed using independent sample ttest. according to the results of data analysis it can be concluded that there was effect of the implementation of cooperative learning model to the result of ten grade students of sma frater don bosco tarakan, because the tvalue (13,772) is bigger than the ttable 2,000 means tvalue > ttable .