“…Nowadays, the 21 st -Century learning issue is a interesting topic that has been researched and developed (Bellanca et al, 2010;Chu, Reynolds, Tavares, Notari, & Lee, 2016;Dwyer, Hogan, & Stewart, 2014). Topics such as critical thinking skills (Miharja et al, 2019;Scott, 2015), problem solving (Binkley et al, 2012;Nithyanantham, Paulmony, & Hasan, 2019), and collaborative learning (Tsuneyoshi, 2016;Vieira, Melo, Avraamidou, & Lobato, 2017), examined from various perspectives are major issues that are believed to be key factors for 21 st -Century learning success (Suwono, 2016;Talat & Chaudhry, 2014). However, other study topics that integrate the process of problem identification, hypothesis design, determination solutions, to application in a multidisciplinary manner indicated to be able to encourage students' thinking skills more comprehensively (Guleker, 2015;Huff, 2014;Thompson, 2011).…”