A comparative study can help people better understand the essence of things, to grasp the general regularity of education The three section of the same class isomerism classroom teaching as the carrier, new lesson from the introduction of the proposed new problem can arouse students' cognitive conflict; in the process of knowledge structure of the new issue of whether beneficial the core concept reveal and construction of mathematics application; questions (example) if for all students to study and summarization of the new issue of whether natural kind, close to the students from four aspects to start, according to the guided inquiry of problem posing in the "rationality" to carry on the comparative analysis and comment. Finally the author of this lesson application of guided inquiry puts forward his own ideas.%比较研究能够帮助人们更好地认清事物的本质，把握教育的一般规律．导入新课所提出的新问题要能引起学生的认知冲突；在知识构建过程所提出的新问题应该有利于核心概念的揭示与构建；数学应用中提出的问题（例题）要面向全体学生探究以及课堂小结所提出的新问题应亲切自然、贴近学生．引导式探宄的总体思路是：明确任务，问题驱动；启发引导，寻找方法；发现问题，修正认识；提出假设，验证猜想；深入探究，完善定义；类比联想，深化拓展．
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