Tsukasa Hirashima Isao Imai Tomoya Horiguchi Takahito Toumoto Error-Based Simulation to Promote Awareness of Errors in Elementary Mechanics and Its Evaluation. 409-416 2009 AIED http://dx.doi.org/10.3233/978-1-60750-028-5-409 conf/aied/2009 db/conf/aied/aied2009.html#HirashimaIHT09