An Interactive Environment for Learning by Problem-Changing. - Sho Yamamoto; Hiromi Waki; Tsukasa Hirashima (ICCE, 2010)

An Implementation of Learning Environment for Problem-Changing Exercise. - Sho Yamamoto; Hiromi Waki; Tsukasa Hirashima (ICCE, 2010)

An Interactive Learning Environment for Problem-Changing Exercise. - Tsukasa Hirashima; Sho Yamamoto; Hiromi Waki (Intelligent Tutoring Systems (2), 2010)