Afifah, N.; Afandi, R. The Effect of Group Investigation Learning Model on Social Studies Learning Outcomes of Class IV SDN SUKO 1 SIDOARJO: Pengaruh Model Pembelajaran Group Investigation Terhadap Hasil Belajar IPS Kelas IV SDN SUKO 1 SIDOARJO. ijemd 2020, 10, 10.21070/ijemd.v10i.564.