Asia-Pacific Forum on Science Learning and Teaching, Volume 14, Issue 2, Article 4, p.1 (Dec., 2013) Cemal TOSUN and M. Diyaddin YASAR Comparison of problem-based learning studies in science education in Turkey with the world: Content analysis of research papers Copyright (C) 2013 HKIEd APFSLT. Volume 14, Issue 2, Article 4 (Dec., 2013). All Rights Reserved. Comparison of problem-based learning studies in science education in Turkey with the world: Content analysis of research papers Cemal TOSUN Department of Science Education, College of Education, Bartin University, Bartin, 74100, TURKEY E-mail: cemaltosun22@gmail.com M. Diyaddin YASAR Department of Educational Sciences, College of Education, Kilis 7 Aralik University, Kilis, TURKEY Received 18 Sept., 2013 Revised 21 Dec., 2013 Contents o Abstract o Introduction o The Purpose of the Study o Research Questions o Method o Data Source o Data Collection Tool o Data Analysis o Findings o Result and Discussion o References o Appendix