Prof.Dr. Rıdvan EZENTAŞ graduated from Eskişehir Anadolu University, Faculty of Arts and Sciences, Department of Mathematics in 1986. In 1992, he completed his PhD in the field of Geometry, Department of Mathematics, University of Leeds, England, and received the title of Doctor. He worked as a Research Assistant between 1888-1993, Assistant Professor Doctor between 1993-1998 and Associate Professor Doctor between 1998-2005 at Uludağ University, Faculty of Arts and Sciences, Department of Mathematics. Since 2005, he has been working as a Professor Doctor in Department of Mathematics and Science, Mathematics Education at the Faculty of Education. He also worked as Head of Topology Department between 1993-2005, Head of Mathematics Education Department between 2006-2008, Director of Vocational School of Technical Sciences between 2006-2015, Coordinator of Vocational Schools between 2011-2015 and Head of Primary Education Department between 2015-2016. He is currently the Head of the Department of Mathematics Education and the Department of Mathematics and Science at the Faculty of Education.