我们通常把教师、学生、教材和环境作为教学的四要素。在教学实践中,人们更多的是关注学生、教材和环境,而“教师”这个宝贵的资源却时常被忽略。实践证明,如果能创造机会,使教师身上独特的价值得以传递和张扬,课堂教学将会熠熠生辉。一、一支粉笔,一个世界 We usually use teachers, students, teaching materials and the environment as four elements of teaching. In teaching practice, people pay more attention to students, teaching materials and environment, and the valuable resource of “teacher” is often neglected. Practice has proved that classroom teaching will be shining if opportunities are created and the unique value of teachers can be conveyed and advertised. First, a piece of chalk, a world