Selçuk Alkan: Selçuk Alkan is currently working as a faculty member in the Department of Elementary Mathematics at Hatay Mustafa Kemal University in Türkiye/Hatay. He complated master's degree in Educational Curriculum and Instruction at Mustafa Kemal University in 2012. Then, in 2018, he received his doctorate degree in Mathematics Education at Anadolu University. His areas of interest include the use of technology in math education, educational digital game, history in mathematics education, out-of-school mathematics teaching. He has instructional experience in out-of-school learning environments.  

Gizem Karaali is originally from Istanbul, TURKEY, where she received undergraduate degrees in electrical engineering and mathematics, both from Boðaziçi University. She got her PhD in mathematics from the University of California Berkeley. She is currently professor of mathematics at Pomona College in Claremont, California, USA.  Karaali has published over a hundred articles as well as four edited volumes; most recently she edited, with Lily Khadjavi, the 2021 MAA Press book Mathematics and Social Justice: Focusing on Quantitative Reasoning and Statistics, which followed a 2019 book titled Mathematics and Social Justice: Resources for the College Classroom. She is a founding editor of Journal of Humanistic Mathematics, a peer-reviewed open-access journal that publishes articles, essays, fiction and poetry with an emphasis on the aesthetic, cultural, historical, literary, pedagogical, philosophical, psychological, and sociological aspects of mathematics. Karaali is also a senior editor of Numeracy, the journal of the National Numeracy Network, that focuses on scholarship on quantitative literacy.      

Mehtap TASTEPE: She works as a PhD Lecturer in the Department of Primary Mathematics Teaching at Sinop University. After graduating from Dokuz Eylül University, Department of Mathematics Teaching in 2009, She completed her master's degree in Mathematics Education at Marmara University in 2012. Then, in 2018, She received my doctorate degree in Mathematics Education at Anadolu University. In this process, the use of technology in mathematics education, operational conceptual understanding, fractions, microteaching applications, games in mathematics education, mathematics curriculum, etc. She worked on it. 17 of her articles, 3 national and 14 international, are available in the literature. She also has abstracts and full text presentations at different scientific congresses. She also has 12 book chapters and 3 book editorships in the international publishing house category. The books She edited are Game and Mathematics Education, Distance Mathematics Education and Comparative Secondary School Mathematics Teaching Programs. The editor teach "out-of-school mathematics teaching in secondary schools" course at the university.