KINASIH, T. .; RATNAWATI, N. The effectiveness of the project based learning model in improving students’ collaboration skills on creative economic materials. Jurnal Teori dan Praksis Pembelajaran IPS, [S. l.], v. 9, n. 1, p. 1–13, 2025. DOI: 10.17977/um022v9i12024p1. Disponível em: https://journal-fis.um.ac.id/index.php/jtp2ips/article/view/1019. Acesso em: 4 jun. 2026.