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)

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)