为使课堂教学有序高效,举手——作为学生和教师之间传递信息的中介环节,已为广大教师教学时所接受和采用。但由于课堂中学生所需表述内容的多重性,使得传统的、整齐划一的举手方法已不再能迅速、准确地表达所传输信息的特征。大家都举手, In order to make the classroom teaching orderly and efficient, raise his hand - as the intermediary link between students and teachers to pass information has been accepted and adopted by the majority of teachers teaching. However, due to the multiplicity of expressions required by the students in the classroom, the traditional and uniform method of raising one's hand can no longer express the characteristics of the transmitted information quickly and accurately. Everyone raised their hands