俗话说万事开头难 ,数学课的教学也是如此 .上课伊始的第一句话讲什么 ?第一件事做什么 ?如何恰到好处地引出课题 ,从而能抓住学生的思绪 ,尽快地进入学习的高潮 ?这确实很有必要去研究探讨 .生活中我们都有这样的体会 ,在饥渴状况下吃东西特别香 ,也有可能更多地转化为机体的 As the saying goes, everything is difficult at the beginning. The teaching of mathematics classes is also the same. What does the first sentence of the beginning of class say? The first thing to do? How to lead the topic just right, so that you can seize the students’ thoughts and enter the climax of learning as soon as possible This is really necessary to study and explore. We all have this kind of experience in life. Eating under the hunger and thirst condition is particularly fragrant, and it may be more transformed into a body.