“…The mathematics education studies in WoS database were first published at early 1980s and despite the change in the rate of growth, the number of publications continued to increase in each period. According to keyword analysis, there were a great variety of studies in mathematics education to determine standards and principles of teaching and learning mathematics such as reform movements (Gravemeijer et al, 2016;Lundin, 2012;Sengupta-Irving, Redman, & Enyedy, 2013), curriculum (Fonger et al, 2018;Fouze & Amit, 2017;Pepin et al, 2017;Voigt, Fredriksen, & Rasmussen, 2020), educational policy (Dalby & Noyes, 2018;Lin, Wang, & Chang, 2018;Nortvedt & Buchholtz, 2018), equity (Jurdak, 2011(Jurdak, , 2014Nortvedt & Buchholtz, 2018;Tan & Thorius, 2019), assessment (Beumann & Wegner, 2018;Kim & Cho, 2015;Nortvedt & Buchholtz, 2018;Veldhuis & van den Heuvel-Panhuizen, 2014;Veldhuis et al, 2013), to evaluate the cognitive and affective skills such as problem solving (Boonen et al, 2016;Verschaffel et al, 2020), achievement (Ciftci, 2015;Veldhuis & van den Heuvel-Panhuizen, 2020), motivation (Schukajlow, Rakoczy, & Pekrun, 2017), to learn more about and support mathematics teachers such as professional development (Sztajn et al, 2007;Williams & Ryan, 2020), teacher education (Buchholtz, 2017;Healy & Ferreira dos Santos, 2014;Tatto & Senk, 2011), teacher knowledge (Koponen et al, 2017;Olfos & Rodríguez, 2019;Scheiner et al, 2019), teacher beliefs…”