Endah Retnowati has been teaching at Department of Mathematics Education, Universitas Negeri Yogyakarta, Indonesia since 2003. Besides teaching, she also conducts research and supervise research students. Her research interests are collaborative learning, problem solving, instructional design and teacher professionalism program. She has published in reputable journals such as Journal of Educational Psychology and Applied Cognitive Psychology. In addition, she is currently an associate editor at a nationally accredited journal namely Cakrawala Pendidikan.Anik Ghufron is a professor at the Universitas Negeri Yogyakarta with expertise is on designing educational curriculum. His current research interests are on character education and its curriculum. Besides teaching and research, he is also appointed as the head of the institute of educational development and quality assurance at the university. In addition, he is also member of editorial board in the scientific journal series in the university. Marzuki earned a doctoral degree from the Islamic State University Syarif Hidayatullah, Jakarta, Indonesia, in 2007. He has been an associate professor at the Department of Civic Education, with specialization in Islamic Religious Education. He teaches courses of Islamic Law, Character Education, Religious Morals, Values and Morality, and Development of Values Education in Civics. His current research is on character education development model in university. Previous publication (in Indonesian) are entitled Building the Character of the Indonesian Nation in the Future through Revitalizing Religious Education in Schools (2014) and Islamic Character Education (2015). Kasiyan is associate professor in the Department of Fine Arts, Universitas Negeri Yogyakarta, Indonesia. He earned his Master and Doctoral degrees on Performing and Fine Arts Studies from Graduate School, Universitas Gadjah Mada, Yogyakarta, Indonesia. He has great interests in arts and aesthetics education, cultural studies, and postcolonial studies. He has been editors and reviewers of national journals and presenters in several international conferences. His current position is the secretary of Journal Development Center, Institute of Quality Improvement and Quality Assurance, Universitas Negeri Yogyakarta, Indonesia. Adi Cilik Pierewan is a Lecturer at University Negeri Yogyakarta where he has been a faculty member since 2006. Adi completed his Ph.D. at University of Manchester and his undergraduate studies at Universitas Gadjah Mada. His research interests lie in the area of well-being, survey methodology, secondary data analysis, public policy and social statistical modeling. Ashadi has been in the English as a Foreign Language teaching business for more than 15 years. He worked wor seven years in a private university before earning his doctorate from the University of Melbourne, Australia in 2014. He is currently back to teaching in the graduate school, Universitas Negeri Yogyakarta, Indonesia. His research interests include EFL teacher development, teacher learning, teacher recruitment, teacher appraisal, academic writing and qualitative research.
