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  • Penelitian ini bertujuan untuk mengetahui pengaruh penerapan model Group Investigation terhadap hasil belajar peserta didik dalam pembelajaran subtema lingkungan tempat tinggalku di SD Negeri 144 Palembang. Penelitian ini menggunakan eksperimen semu (eksperimen quasi) dengan jenis rancangan One Group PreTest PostTest Design. Sampel dalam penelitian ini adalah kelas IV A memiliki jumlah peserta didik sebanyak 35 orang. Teknik pengumpulan data yang digunakan adalah tes. Dari hasil perhitungan, didapatkah rata-rata nilai Pretest adalah 53,4. Sedangkan rata-rata nilai Posttest adalah 59,91. Berdasarkan uji hipotesis didapatlah thitung= 4,2 sedangkan ttabel= 0,339 dengan taraf signifikan 0,05 (5%). karena thitung>ttabel maka Ho ditolak dan Ha diterima. Maka dapat disimpulkan bahwa penerapan model Group Investigation memberikan pengaruh terhadap hasil peserta didik dalam pembelajaran subtema lingkungan tempat tinggalku di SD Negeri 144 Palembang. Kata-kata kunci: Model Group Investigation, Hasil Belajar. ABSTRACT This study objective was to investigate the effect of applying investigation group model on learning outcomes of students in learning the environmental sub-them in on public elementary school number 144 Palembang. This study used quasi-experiments with the type of design of the One Group PreTest PostTest Design. The samples were 35, 4th graders of public elementary school. Data-collecting techniques used were tests. The results showed, the mean fare pretest written were 53,4. While the mean fare that Posttest value were 59,91. The result of test, obtained tcount = 4.2 while ttable = 0.339 with a significant level of 0.05 (5%). Finally, ttable then Ho was rejected and Ha was accepted. Then it could be concluded that the applyimg of investigation group model influenced learning outcomes of students inlearningthe enviromental sub-them in on public elementary school number 144 palembang. Keywords: Investigation Group model, learning outcomes.