《用字母表示数》是北师大小学数学四年级下册第七单元第一课时的内容,是小学生初步接触代数思想的启蒙课,也是后续学习简易方程乃至初中学习数与代数的基础,本节课对学生来说是有一定的难度。笔者有幸去阜阳参加了全国著名特级老师吴正宪专家团队高端培训,聆听了这样一节课,感受颇丰,现把课堂的精彩片断与同行分享。片断一:谈话近距离师:对不起,让你们久等了(给学生深深地鞠了一躬),生:没关系。师:这就是人与人之间的交流,你得和我的话对上了,这样子聊着聊着我们就……生:认识了。师:对,说不定我们就成为 “The number of letters” is the content of the first lesson of the seventh unit of the fourth grade undergraduates’ fourth grade undergraduates’ primary school. It is also an enlightening lesson for pupils’ initial contact with algebraic thought. It is also the basis for subsequent learning of simple equations and even junior high school learning numbers and algebra. Lesson for students is a certain degree of difficulty. I was fortunate enough to go to Fuyang attended the famous special grade teacher Wu Zhengxian expert team of high-end training, listening to such a lesson, feel quite rich, now the wonderful part of the class and colleagues to share. Piece One: talk close division: I’m sorry, let you wait a long time (to give students a deep bow), Health: It does not matter. Teacher: This is the exchange between people, you have to be right with me, so chatting and chatting with us ... ... Health: met. Teacher: Yes, maybe we will be