以乐引趣,就是巧妙地运用学生熟悉有趣的故事引出数学概念和引入数学课题,使学生心情舒畅、思维活跃,怀着极大的兴趣去学习新课。 如:讲反证法时,我先讲“路边苦李”的故事:古时候有个七岁的小孩王戎,与一群小朋友在路边玩,看见一棵李树,树上结满了李子,树枝都快压断了。其他的小朋友看见后都跑过去摘,只有王戎站着不动。有小朋友问他为什么不去摘,他说:“树长在路边,李子那么多,肯定是苦的,不然,李子早就没有了。”小朋友们摘来一尝,果然是苦的不能吃。教师讲完故事,再引导学生讨论其中的原因,用“反证法”的思维方式分析出王戎判断“李子是苦的”道理,理出个“因为”、“所以”之后,然后点题“反证法”。 To introduce music is to cleverly use the students to get familiar with the interesting stories to elicit mathematical concepts and introduce mathematics topics, so that students feel comfortable, thinking is active, and learn new lessons with great interest. For example, when I talk about anti-evidence, I first tell the story of “Bitter Li on the roadside”: In the old days, Wang Qi, a seven-year-old child, was playing on the roadside with a group of children. He saw a plum tree, and the tree was full of plums. The branches are breaking quickly. After the other children saw him, they ran and picked it. Only Wang Shuo stood still. A friend asked him why he did not pick it. He said: “The tree is on the roadside, so many plums, it must be bitter, otherwise, the plums will be gone.” The children picked it up and it was really bitter to eat. . The teacher finished the story and then guided the students to discuss the reasons. Using the “anti-evidence method” to analyze Wang Tao’s reasoning that “Plum is a bitter”, after reasoning “because” and “so”, then the question “anti-evidence” .