ANGGRIYANI, Meli; SYAHARUDDIN, Syaharuddin; MANDAILINA, Vera; ABDILLAH, Abdillah; RAZA, Wasim. Optimizing Student Motivation and Learning Outcomes Through Group Investigation Cooperative Learning Model on Ratio Material: A Study of Mathematical Reasoning Ability. Indonesian Journal on Learning and Advanced Education (IJOLAE), [S. l.], v. 7, n. 3, p. 537–552, 2025. DOI: 10.23917/ijolae.v7i3.8743. Disponível em: https://journals2.ums.ac.id/ijolae/article/view/8743. Acesso em: 25 feb. 2026.