ARYGUNARTHA, Gede Yohanes; HAMEL, Victorious A; PERTIWI, I Dewa Ayu Eka. Teachers’ Perceptions of the Group Investigation (GI) Model for Improving Learning Outcomes and Academic Achievement in Science Instruction. International Journal of Environmental, Sustainability and Social Science, [S. l.], v. 7, n. 4, p. 1104–1110, 2026. DOI: 10.38142/ijesss.v7i4.2029. Disponível em: https://journalkeberlanjutan.com/index.php/ijesss/article/view/2029. Acesso em: 25 aug. 2026.