正如牛顿所说的:“没有大胆的猜想,就没有伟大的发现。”在证明任何一个定理之前,先要猜想,在得到完全的证明之前,需要经过不断的尝试、检验、完善和修改自己的猜想,得出推测证明的思路。在初中数学的教学中也应重视学生思维直觉探索性和发现性的培养,即学生合理推理能力的培养。一、转变思想观念,提高师生认识,树立合理猜想的意识传统的教学思想和形式一直束缚着教师的思想和行为,同样也扼杀了学生合理推理的欲望,因此,要提高学生的合理推理能 As Newton put it: “Without bold conjecture, there is no great discovery.” Before proving any one theorem, first guess that it requires constant experimentation, testing, perfection and adaptation before it is fully proved My guess, come to speculation that the idea. In the junior high school mathematics teaching should also attach importance to the development of intuitionistic exploratory and discovery of students ’thinking, that is, the cultivation of students’ reasoning ability reasonably. First, to change the concept of thinking, to enhance awareness of teachers and students, establish a reasonable guess of the traditional teaching ideas and forms have been binding the teacher’s thinking and behavior, but also stifle the desire of students reasoning reasoning, therefore, to improve students’ reasonable reasoning