MUSFIRAH; AMRAN, Muhammad; HAKIM, Nurhalifa. Implementation the Problem Based Learning (PBL) Model Assisted by Pop-Up Book Media to Increase the Activeness of Science Learning in Class V Students of UPTD SD Negeri 85 Parepare. International Journal of Sustainable Applied Sciences, [S. l.], v. 4, n. 7, p. 585–596, 2026. DOI: 10.59890/ijsas.v4i7.16. Disponível em: http://ijsasjournal.my.id/index.php/ijsas/article/view/16. Acesso em: 28 jul. 2026.