抓住变化过程中不变的因素王伟东（江苏射阳教育督导室２２４３００）中学数学教学中有机地运用变化手段，即主动地变化教材、变化教法、变化题目、变化探索思路、变化解题方法，对于学生能力的培养，智力的开发所起的作用是不容忽视的。变化是一种探索过程，它是转化的另... Grasping the constant factors in the process of change Wang Weidong (Jiangsu Sheyang Education Supervision Office, 224300) Middle school mathematics teaching uses organic methods of change, that is, actively changing teaching materials, changing teaching methods, changing topics, changing exploration ideas, and changing problem solving methods. For the cultivation of student abilities, the role of intellectual development cannot be ignored. Change is a process of exploration, it is the conversion of another...