教学是解决不知与知、浅知与深知的矛盾，也可以说是要学生解决问题。这就要求在教学中把精力集中在培养分析问题和解决问题的能力上。把问题带进课堂是化学教学进行启发式教学的必要手段。采用问答的方式教学，不但可以向学生传授新知识，而且对激发学生学习兴趣，开阔学... Teaching is a solution to the conflicts between being ignorant and knowledgeable, superficial and profoundly aware. It can also be said that students are required to solve problems. This requires focusing on the ability to develop analytical questions and solve problems in teaching. Bringing the problem into the classroom is a necessary tool for the heuristic teaching of chemistry teaching. Teaching by way of question and answer can not only impart new knowledge to students, but also stimulate students’ interest in learning and broaden their learning.