“拓展教学”是苏教版高中化学新教材中新编入的教学栏目,主要目的是想通过该栏目中的素材提高学生对化学学习的兴趣,促进学生学习形式的多样化发展,改变化学课堂以往枯燥乏味的氛围,丰富教学内容,提高学生的学习热情和学习积极性。教师要充分利用“拓展视野”中的相关素材提高高中化学教学的效率和质量。一、通过巧妙设置问题情境,引入“拓展视野”中的内容“拓展视野”栏目中包含了很多体现社会进步,反映化学发展状况及发展难题的内容,对化学发展的新趋势及化 “Expanding teaching ” is a newly-enrolled teaching part in the new edition of the chemistry textbook of the senior high school of the Sujiao version. The main purpose is to improve the students ’interest in chemistry learning through the materials in this column and to promote the diversified development and change of students’ learning styles Chemical classroom past boring atmosphere, rich teaching content, improve student enthusiasm for learning and learning enthusiasm. Teachers should make full use of related materials in “Developing Perspectives” to improve the efficiency and quality of chemistry teaching in senior high schools. First, by ingeniously setting the situation of the problem, the introduction of the contents of “Expanding the Field of Vision” and “Expanding the Field of Vision” contains many contents embodying social progress and reflecting the status of chemical development and development problems. New trends in chemical development and The