“…In the literature, there are studies on the development of a measuring tool for reflective thinking and applied at different education levels (Badger, 2010;Başol & Evin-Gencel, 2013;Taşkın-Can & Yıldırım, 2014) and studies on improving reflective thinking for problem-solving (Hoffman & Spatariu, 2011;Rieger, Radcliffe, & Doepker, 2013;Chee-Choy & San Oo, 2012). There is a significant relationship between secondary school students' ILS towards mathematics and RTS (Katrancı & Şengül, 2020). Some inquiry-based studies are related to the development of measurement tools (Wu & Hsieh, 2006;Aldan-Karademir & Saracaloğlu, 2013).…”