Schools for visually-impaired students are supposed to respect students＇ principal status in the classroom, and promote positive interactions between teachers and students so as to create a classroom environment of free exploration. This study, by taking for example a high-quality mathematics classroom teaching in a school for visuaUy-impaired students, aims to explore the features of the speech act interactions between teachers and students, based on the improved Flanders Interactive Analysis System （iFIAS） and such methods as matrix analys...
