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1问题的提出2011年版义务教育课标要求:对几何定理的教学,要以探索与证明的流程来进行.对一些基本定理如三角形内角和定理、平行四边形的性质定理、三角形中位线定理、三角形相似的预备定理等,如何有效引导学生发现、悟出证明的基本思路,来提高课堂效率呢?经过探索、总结近几年课改成功经验和优秀课例得出:基本定理的教学应按照“生成、发现、分离、复原与论证”这样一条基本思路来进行.实践也证
1 PROBLEM PROBLEMS The Compulsory Education Curriculum Requirements for 2011: The teaching of geometry theorem should be based on the process of exploration and proof. For some basic theorems, such as the interior angles and theorems of triangles, the properties of parallelograms, the theorem of bit lines in triangles, How to effectively guide the students to discover and realize the basic idea of proof in order to improve the efficiency of the classroom? After exploration, summarize the successful experience of curriculum reform and excellent lessons in recent years draw: the teaching of basic theorems should be in accordance with the “Generation, discovery, separation, recovery and argument ” such a basic idea to carry out.