导入,是课堂教学重要环节之一,是课堂教学的有机组成部分,它的成功与否,对整个教学效果有直接影响。导入的目的,一是引起学生的注意,激发学生的学习兴趣;二是明确本节课的教学任务。约翰·洛克说“:教师的最大技巧在于集中和保持学生的注意。”在“导”字上做文章,可以吸引学生 Import, is an important part of classroom teaching, is an integral part of classroom teaching, its success or not, the direct impact on the entire teaching effectiveness. The purpose of import, first, arouse the attention of students, stimulate students interest in learning; the second is to clarify the teaching task of this lesson. John Locke said: “The greatest skill of teachers is to centralize and keep students' attention.” Fusing the word “guide” can attract students