WELNI, Efrida; FAUZI, A; USMELDI, Usmeldi. The Development of Problem Based Learning Device for Junior High School Natural Science Class for Learning Substance Pressure and its Daily Use Material. International Journal of Educational Dynamics, [S. l.], v. 2, n. 1, p. 199–208, 2020. DOI: 10.24036/ijeds.v2i1.246. Disponível em: http://ijeds.ppj.unp.ac.id/index.php/IJEDS/article/view/246. Acesso em: 28 may. 2026.