Topic Study Groups (TSG)
 These are parallel sessions of paper presentations for sharing research with colleagues who work in the same areas of interest. Participants whose papers have been accepted for Topic Study Groups will have 10-15 minutes to present orally. Invited Topic Study Group chairs will facilitate and manage the Topic Study Group sessions.

TSG Chairs: 
TSG 1 Flexibility in Mathematics Curriculum and Materials
Chair Oh Nam Kwon Seoul National University
Co-chair Chan Roath Ministry of Education, Culture, Sports Cambodia
Coordinator Po-Hung Liu National Chin-Yi University of Technology, Taiwan
Ting-Ying Wang National Taiwan Normal University, Taiwan
TSG 2: Flexibility in Mathematics Classroom Practices
Chair Ann Gervasoni Faculty of Education, Monash University, Australia
Co-chair Tadashi Nomachi Tsuda University, Japan
Coordinator Ru-Fen Yao National Chia-Yi university, Taiwan
TSG 3: Flexibility in Mathematics Assessment 
Chair Zulkardi University of Sriwijaya (UNSRI) ,Indonesia
Co-chair Laila Lomibao University of Science and Technology of Southern Philippines, Philippines
Coordinator Shuk-Kwan Leung National Sun Yat-sen University, Taiwan
TSG 4: Flexibility in Mathematics Teacher Education and Development
Chair Pi-Jen Lin National Tsing Hua University, Taiwan
Co-chair Qingqiong Zhang Wenzhou University, China
Coordinator Ying-Hao Cheng University of Taipei, Taiwan
Hui-Yu Hsu National Tsing Hua University, Taiwan
TSG 5: Flexibility in the use of communication of mathematics
Chair Bor-Chen Kuo National Taichung University of Educaton, Taiwan
Co-chair Ratu Ilma Indra Putri (IPC) Universitas Sriwijaya, Indonesia 
Coordinator Yuan Yuan Chung Yuan Christian University, Taiwan
TSG 6: Flexibility in Mathematics Learning
Chair Wee Tiong Seah  University of Melbourne, Australia
Co-chair CHUA, Boon Liang  National Institute of Education, Nanyang Technological University, Singapore
Brigitte Lutz-Westphal Freie Universität Berlin, German
Coordinator Yung-Chi Lin National Tsing Hua University, Taiwan