Kotaro Komatsu

J-GLOBAL         Last updated: Jul 10, 2019 at 09:48
Kotaro Komatsu
Shinshu University
Institute of Education, Mathematics Education
Job title
Associate Professor
PhD in Education(University of Tsukuba), MA in Education(University of Tsukuba), Bachelor of Science(University of Tsukuba)
Research funding number

Research Interests


Academic & Professional Experience

Apr 2014
Associate Professor, Institute of Education, Shinshu University
Apr 2016
Mar 2017
Visiting Fellow, University of Southampton
Feb 2012
Mar 2014
Associate Professor, Faculty of Education, Shinshu University
Apr 2010
Jan 2012
Assistant Professor, Faculty of Education, Shinshu University
Apr 2004
Mar 2007
Teacher, Senior High School at Sakado, University of Tsukuba


Apr 2007
Mar 2012
Graduate School of Comprehensive Human Sciences, University of Tsukuba,
Apr 2002
Mar 2004
Graduate School of Education, University of Tsukuba,
Apr 1998
Mar 2002
College of Natural Sciences, First Cluster of Colleges,, University of Tsukuba,

Published Papers

Bokhove, C., Miyazaki, M., Komatsu, K., Chino, K., Leung, A., & Mok, I. A. C.
Frontiers in Education   4:63    Jul 2019   [Refereed]
Miyazaki, M., Nagata, J., Chino, K., Sasa, H., Fujita, T., Komatsu, K., & Shimizu, S.
Frontiers in Education   4:31    Apr 2019   [Refereed]
Task design for developing students’ recognition of the roles of assumptions in mathematical activity
Komatsu, K., Stylianides, G. J, & Stylianides, A. J.
Proceedings of the Eleventh Congress of the European Society for Research in Mathematics Education   in press    [Refereed]
Miyazaki, M., Nakagawa, H., Chino, K., Iwata, K., Komatsu K., & Fujita, T.
School mathematics curriculum reforms: Challenges, changes and opportunities (ICMI Study 24 conference proceedings)   269-276   Nov 2018   [Refereed]
Komatsu, K., Yamazaki, M., Fujita, T., Jones, K., & Sue, N.
Proceedings of the 42nd Conference of the International Group for the Psychology of Mathematics Education, Vol. 3   227-234   Jul 2018   [Refereed]
Komatsu, K., Fujita, T., Jones, K., & Sue, N.
For the Learning of Mathematics   38(1) 31-37   Mar 2018   [Refereed]
Kotaro Komatsu
Educational Studies in Mathematics   96(2) 1-16   Oct 2017   [Refereed]
Komatsu, K., Jones, K., Ikeda, T., & Narazaki, A.
Journal of Mathematical Behavior   47 1-15   Sep 2017   [Refereed]
Komatsu, K., & Jones, K.
Proceedings of the Tenth Congress of the European Society for Research in Mathematics Education   187-194   Feb 2017   [Refereed]
Komatsu, K., Ishikawa, T., & Narazaki, A.
Proceedings of the 13th International Congress on Mathematical Education      Jul 2016   [Refereed]

Books etc

G. Hanna, D. Reid, & M. de Villiers (Eds.), Proof technology in mathematics research and teaching (in press)
Komatsu, K., & Jones, K. (Part:Contributor, Virtual manipulatives and students’ counterexamples during proving)
Kotaro Komatsu (Part:Contributor, 小数・分数の乗法・除法,pp. 54-64)
東洋館出版社   Mar 2019   
Kotaro Komatsu (Part:Contributor, 算数科教育の実践②:図形の学習指導,pp. 57-68)
ミネルヴァ書房   Mar 2019   
A. J. Stylianides, & G. Harel (Eds.), Advances in mathematics education research on proof and proving: An international perspective (ICME-13 Monographs)
Komatsu, K., Ishikawa, T., & Narazaki, A. (Part:Contributor, Proof validation and modification by example generation: A classroom-based intervention in secondary school geometry, pp. 131-144)
Springer   Jan 2018   
Kotaro Komatsu (Part:Contributor, 作図と論証,pp. 191–197)
一藝社   Oct 2015   

Conference Activities & Talks

The role of ‘opportunity to learn’ in the geometry curriculum: A multilevel comparison of six countries
Bokhove, C., Miyazaki, M., Leung, A., Mok, I., Komatsu, K., & Chino, K.
2019 American Educational Research Association Annual Meeting   Apr 2019   
Task design with DGEs: The case of students’ counterexamples
Jones, K., & Komatsu, K.
The Eleventh Congress of the European Society for Research in Mathematics Education   Feb 2019   
Interpretation of diagrams in dynamic geometry environments
Komatsu, K., & Jones, K.
The 41st Conference of the International Group for the Psychology of Mathematics Education   Jul 2017   
Unification by proofs: The case of star polygon
Komatsu, K., Fujita, T., Jones, K., & Sue, N.
British Society for Research into Learning Mathematics   Mar 2017   
Diagrams in students’ proving activity in secondary school geometry
Jones, K., & Komatsu, K.
The Tenth Congress of the European Society for Research in Mathematics Education   Feb 2017