学生是课堂教学的主体,一切教学活动要以学生为中心开展。要想做好这项工作,教师就必须认真了解学生的实际情况,全面把握他们的认知、理解能力和知识基础。 Students are the main body of classroom teaching, all teaching activities should be carried out with students as the center. To do a good job, teachers must carefully understand the actual situation of students and fully grasp their cognitive, understanding and knowledge base.