“…National and international content analysis studies in physics education (Kaltakçı-Gürel et al, 2017a;Kaltakçı-Gürel et al, 2017b;Kanlı et al, 2014;Önder et al, 2013) and science education (Chang, Chang, & Tsang, 2010;Lee, Wu, & Tsai, 2009;Tsai & Wen, 2005; Tzu-Chiang, Tzung-Jin, & Chin-Chung, 2014) make an important contribution to the literature by showing the gaps and shortcomings in the field. While Önder et al (2013) identified 'Learning approaches' and 'Misconceptions/learning difficulties' as the mostly studies themes by examining 46 physics education research articles in Journal of Turkish Science Education (TUSED) between the years 2004 and 2011 by content analysis, Kanlı et al (2014) found that the 'Nature of physics', 'Epistemology and Science literacy', 'Modeling' and 'Gifted education' were the least studied themes as a result of their content analysis study on 282 physics education studies presented and published in National Science and Mathematics Education Congress between the years 1994-2012. In international content analysis studies in science education (Chang et al, 2010;Lee et al, 2009;Tzu-Chiang et al, 2014) field, 'Conceptual change' and 'Conceptions / Misconceptions' were found to be the most featured themes, while 'Informal learning' and 'Educational technology' were the least studied themes.…”