This is an effective teacher-student interaction.
这样，才是有效的师生互动。
Third, the number of student interaction to be appropriate.
小学生互动次数要适宜。
Teaching effect of teacher-student interaction is often difficult to obtain direct teaching.
师生互动的教学效果往往是端直讲授难以获得的。
Teaching effect of teacher-student interaction is often difficult to obtain direct teaching.
师生互动的教学效果往往是端直讲授难以获得的。
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