“…Today, studies on both problem-solving skills (Han, 2021;Labe, 2015;Priyatni, 2020;Politis & Houtz, 2015;Sala et al, 2015) and PBL (Chen, 2016;Hendry et al, 2016;Kim, 2014;Stentoft, 2017Wiggins et al, 2016 continue increasingly in different fields. On the other hand, various studies that have been conducted in recent years show the effects of PBL on problem-solving skills (Argaw et al, 2017;Choi, 2004;Choi et al, 2014;Dochy et al, 2003;Gurlen, 2011;Klegeris et al, 2013;Riswari et al, 2018;Rokhmawati et al, 2016;Sahyar, Sani, & Malau, 2017;Siagian, Saragih & Sinaga, 2019;Son & Song, 2012).…”