IMPROVING STUDENT LEARNING ACTIVITY THROUGH MODEL PROBLEM BASED LEARNING (PBL) WITH MEDIA MAGIC BOX (Case Study of Class IV SD Negeri 171/II Pedukuh Bungo Regency). (2022). Jurnal Tunas Pendidikan, 5(1), 59-67. https://doi.org/10.52060/pgsd.v5i1.902