<![CDATA[This study was to describe the profile and patterns of cooperation ability of students in science learning on class IV and V in 2015/2016. The research samples were students of class IVa and Va that were selected by purposive sampling. The study design was a simple descriptive.Collecting data used observation sheets, questionnaires student, teacher interviews, photo and video documentation.Data analysis was performed by descriptive technique which is the result of qualitative data then was described. The results showed that overall average of students cooperation ability have "medium" criteria with a value of 55.16%. There were formed four patterns, which were spontaneous cooperation, direct cooperation, contract cooperation, and traditional cooperation. The most patterns of students cooperation on the class IVa and Va was the contract cooperation.Penelitian ini bertujuan untuk mendeskripsikan profil kemampuan kerjasama dan pola kerjasama siswa dalam pembelajaran IPA kelas IV dan V Tahun Ajaran 2015/2016. Sampel penelitian adalah siswa kelas IVa dan Va SD N 1 Rajabasa Raya yang dipilih dengan purposive sampling. Desain penelitian adalah deskriptif sederhana. Pengumpulan data menggunakan lembar observasi, angket siswa, wawancara guru, serta dokumentasi foto dan video. Analisis data dilakukan dengan teknik deskriptif yakni hasil penelitian berupa data kualitatif yang kemudian dideskripsikan. Hasil penelitian menunjukkan bahwa secara keseluruhan rerata kemampuan kerjasama siswa SD Negeri 1 Rajabasa Raya berkriteria sedang dengan nilai 55,16%. Terbentuk empat pola yaitu kerjasama spontan, kerjasama langsung, kerjasama kontrak, dan kerjasama tradisional. Pola kerjasama siswa yang paling menonjol pada kelas IVa dan kelas Va adalah pola kerjasama kontrak.Kata kunci: kemampuan kerjasama, pembelajaran IPA, pola kerjasama]]>
