My main research interest is multiple-choice items and test development. I focus on the influence of item writing techniques on item validity and reliability. I am also interested in the study of supplementary education. I explore causes and outcomes of private tutoring by using nationally representative data in Turkey, drawn from Program for International Student Assessment (PISA) made available by OECD. I specialize in advanced quantitative methods and large datasets.

Doç. Dr. Mustafa Cem Babadoğan, Ankara Üniversitesi Eğitim Bilimleri Fakültesi’nde görev yapan bir akademisyendir. Lisans eğitimini Ankara Üniversitesi Eğitim Fakültesi’nde tamamladıktan sonra yüksek lisans ve doktora derecelerini aynı üniversitede Eğitim Programları ve Öğretim Anabilim Dalı’nda elde etmiştir. Araştırma alanları arasında eğitim programları, öğretim yöntemleri ve eğitim teknolojileri bulunmaktadır. Pek çok akademik makale ve kitap bölümü yazmış olan Doç. Dr. Babadoğan, aynı zamanda ulusal ve uluslararası konferanslarda sunumlar yapmış ve eğitim projelerinde yer almıştır.

Professor COŞTU, completed his undergraduate education in 1998 at Karadeniz Technical University in the Chemistry Education Department of Fatih Education Faculty. He completed his master's degree in 2002 in the Chemistry Education Program of the Institute of Science at Karadeniz Technical University, and in 2006, and PhD in the same department. From 1999 to 2009. He held positions as Research Assistant, Assistant Professor, and Associate Professor in the Chemistry Education Department at Fatih Education Faculty of Karadeniz Technical University. From 2009 to 2012, he worked as an Associate Professor in the Chemistry Education Department of Buca Education Faculty at Dokuz Eylül University, and from 2012 to 2014, he worked as an Associate Professor in the Science Education Department at Yıldız Technical University. Since 2014, he has been working as a Professor in the Science Education Department at Yıldız Technical University. His main areas of research include concept teaching, misconceptions, conceptual change, science history and philosophy. He has published around 200 papers in refereed journals and presented at conferences. Additionally, he has actively participated in numerous scientific research projects. Furthermore, he has authored and edited textbooks, served as chapter authors, and held editorial and board membership positions in many national and international journals. He is married and has three children.

Betül TEKEREK, 1984 Konya doğumludur. 2006 yılında Selçuk Üniversitesi Eğitim Fakültesi İlköğretim Matematik Öğretmenliği bölümünde lisans eğitimini tamamlamıştır. 2010 yılında Selçuk Üniversitesi İlköğretim Matematik Öğretmenliğinde yüksek lisans ve 2016 yılında ODTÜ İlköğretim alanında doktora derecesini almıştır. Kahramanmaraş Sütçü İmam Üniversitesi, Eğitim Fakültesi, Matematik ve Fen Bilimleri Eğitimi Bölümü Matematik Eğitimi Ana Bilim Dalında öğretim üyesi olarak görev yapmaktadır.  Matematik öğretiminde yeni yaklaşımlar, STEM eğitimi, matematik öğretmen eğitimi alanlarında çalışmalar yapmaktadır.

Hakan Tuzun is a Professor in the Department of Computer Education and Instructional Technology at Hacettepe University in Ankara, Turkey. His current work involves the design of rich learning environments, frequently with the aid of technology but also by considering the culture of the learners and the communities they are part of.