At first , it expatiates on the notion and function of visitor center , and analyzes the actuality and existent problems of the visitor center planning : secondly , it expounds on the rudimental principle of the planning of visitor center , which comprise the principle , properties , theorization dependencies , programs of the planning ; at last , it analyzes the main content of the planning of visitor center , especially the grating principle the planning of visitor center , including country ' s tourism site quality rating assessing standard , the district site of the planning of visitor center and the systems analysis and planning of visitor center synthesis " intergrant . the second section was case study 第一部分是理论研究篇，首先对游人中心的相关概念、功能等进行阐述，并分析了游人中心规划的现状及存在的问题；其次，对游人中心规划的基本原理进行了阐述，包括规划的原则、性质、理论依据、程序等；最后，是对游人中心规划的主要内容进行分析，特别是对国家《旅游区(点)质量等级评定》标准中的游人中心规划规范评分细则、游人中心区位规划、游人中心综合体构成成分的系统分析及规划等进行重点研究。
This essay analyses the reason why the rudimental teaching of plane geometry is difficult and respectively analyses the reasons and resolving methods in five aspects - the teaching linking with the knowledge of the primary school , the teaching of the concept , the teaching of the language of geometry , the teaching of the graph , the teaching of the proof and reasoning . at the same time , this paper includes many practical examples that can give specific reference to related research 文章分析了中学平面几何入门难的原因，并从“与小学的衔接教学” 、 “概念的教学” 、 “几何语言的教学” 、 “图形的教学”和“推理论证的教学”五个方面分别分析了入门教学困难产生的原因和解决方法，以期从教学的细节入手来解决平面几何入门难的问题。
