Collaborative Task and Communication Protocol Among Pedagogical Agents in Teaching Task. - Ryo Takaoka; Toshio Okamoto (CELDA, 2004)

A Design and Development of Dialog Pattern Based Bulletin Board Tool. - Ryo Takaoka; Kohei Kusano; Toshio Okamoto (CELDA, 2005)

A design of interaction model among pedagogical agents in collaborative teaching process. - Ryo Takaoka; Toshio Okamoto (Comput. Sci. Inf. Syst., 2005)

Collaborative Support Model for Group Learners among Distance Teaching Assistant. - Ryo Takaoka; Shinichi Iwasa; Ayumi Kodama; Toshio Okamoto (ICCE, 2007)

A Practice and Evaluation of Game-based Learning Environment for Linear Equation. - Ryo Takaoka; Masayuki Shimokawa; Toshiaki Honda; Toshio Okamoto (ICCE, 2010)

Collaborative Process Among Learning Support Agents in Game-based Learning Environment. - Ryo Takaoka; Masayuki Shimokawa; Toshiaki Honda; Toshio Okamoto (ICCE, 2010)

A Framework of Educational Control in Game-based Learning Environment. - Ryo Takaoka; Masayuki Shimokawa; Toshio Okamoto (ICALT, 2011)

Collaborative learning using LEBEL (Learning Ecology Based E-Learning). - Toshiaki Honda; Wakio Oyanagi; Ryo Takaoka (ICCE, 2011)

A Practice and Evaluation of Distance TA Training Program to Enhance Learning Supporter's Distance Support Ability. - Ryo Takaoka; Masayushi Shimokawa; Shigeki Ahama; Toshiaki Honda; Toshio Okamoto (ICCE, 2011)

A Design Principle and Collaborative Learning Support Method in Game-based Learning Environment. - Ryo Takaoka; Masayuki Shimokawa; Takuya Nitta; Toshio Okamoto (ICCE, 2012)

A Development of Game-Based Learning Environment to Activate Interaction among Learners. - Ryo Takaoka; Masayuki Shimokawa; Toshio Okamoto (IEICE Trans. Inf. Syst., 2012)

Promoting Reflection on Question Decomposition in Web-based Investigative Learning. - Yoshiki Sato; Akihiro Kashihara; Shinobu Hasegawa; Koichi Ota; Ryo Takaoka (ICCE, 2019)

Adaptive recommendation for question decomposition in Web-based investigative learning. - Miki Hagiwara; Akihiro Kashihara; Shinobu Hasegawa; Koichi Ota; Ryo Takaoka (TALE, 2019)

Investigation of Vocational Students9 Skills for Determining Learning Experiences on CAD Construction Drawing Course. - Abdul Haris Setiawan; Ryo Takaoka; Lilis Trianingsih (TALE, 2020)