“…Problem-solving is a planned process that needs to be carried out in order to obtain a distinct solution of a problem, both for routine and non-routine problems (Dostál, 2015;Goldhammer et al, 2014). Problem-solving skills train students to figure out solutions of a particular problem-based issue in learning mathematics and finding appropriate solutions (Billstein, Libeskind, & Lott, 2016;Ersoy & Bal-Incebacak, 2017;Esan, 2015). It is a complex process, containing affective and behavioral processes, and is based on cognitive processes that are the result of finding a way out of difficulties and strategies to deal with obstacles (Clark, Cuthbert, Lewis-Fernández, Narrow, & Reed, 2017;Gaudiano, 2008).…”