The purpose of this study to determine the effect of the application of cooperative learning model of the type of team assisted individualization on learning outcomes. This type of research is experimental research with the experimental design non equivalent control group. The data collection is done by using a written test questions, which are then analyzed using quantitative data. The analysis data using t test pooled varians and the program Statistical Product and Service Solutions (SPSS). The results showed that there is significant influence on the implementation of cooperative learning model of the type of team assisted individualization of the learning outcomes of cognitive social science IVB grade students of SD Negeri 1 Simbarwaringin the academic year 2016/2017.Tujuan penelitian ini untuk mengetahui pengaruh penerapan model cooperative learning tipe team assisted individualization terhadap hasil belajar. Jenis penelitian yang digunakan adalah penelitian eksperimen dengan desain eksperimen thenon equivalent control group. Pengumpulan data dilakukan dengan menggunakan soal tes tertulis, yang kemudian dianalisis dengan menggunakan analisis data kuantitatif. Analisis data menggunakan t test pooled varians dan program Statistical Product and Service Solutions (SPSS). Hasil penelitian menunjukkan bahwa terdapat pengaruh yang signifikan pada penerapan model cooperative learning tipe team assisted individualization terhadap hasil belajar kognitif IPS siswa kelas IVB SD Negeri 1 Simbarwaringin tahun pelajaran 2016/2017.Kata kunci: team assisted individualization, hasil belajar.