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