Shakila Wahyu Ramadhani, Iksan Kahar, Mirnawati. THE EFFECT OF THE BUSY BOX EDUCATIONAL PLAY TOOL ON PROBLEM-SOLVING ABILITY IN EARLY CHILDHOOD AT TK QUR’AN ARINA MUNZALAN MUBAROKAN PALU CITY. SJIIPS [Internet]. 2026 Sep. 12 [cited 2026 Sep. 14];15(3):1385-91. Available from: https://ejournal.unibabwi.ac.id/index.php/sosioedukasi/article/view/9435