Increasing Student Cooperation Through A Project-Based Learning Model with the Theme of Ecosystems. Journal of Basic Education Research, [S. l.], v. 4, n. 1, p. 45–49, 2023. DOI: 10.37251/jber.v4i1.299. Disponível em: https://cahaya-ic.com/index.php/JBER/article/view/299. Acesso em: 22 may. 2026.