A Computer-Based Environment for Learning by Problem-Posing as Sentence-Integration. - Tsukasa Hirashima; Takuro Yokoyama; Masahiko Okamoto; Akira Takeuchi (ICCE, 2006)

Learning by Problem-Posing as Sentence-Integration and Experimental Use. - Tsukasa Hirashima; Takuro Yokoyama; Masahiko Okamoto; Akira Takeuchi (AIED, 2007)

An Experimental Use of Learning Environment for Problem-Posing as Sentence-Integration in Arithmetical Word Problems. - Tsukasa Hirashima; Takuro Yokoyama; Masahiko Okamoto; Akira Takeuchi (Intelligent Tutoring Systems, 2008)