《倒数》是人教版小学数学六年级第二单元第三部分的教学内容,本课的教学目标清晰简单:理解倒数的意义,掌握求一个倒数的方法,能熟练准确地写出一个数的倒数,在探究活动中培养观察、归纳、推理和概括的能力。但有一个普遍的现象是毋庸置疑的:那就是无论在大型公开课,还是平时同事间交流的教研课,很少有老师选择这节课来上的。仅从其自身内容、教学目标以及前后 The “countdown” is the teaching content of the third part of the second unit of the sixth grade of the PEP curriculum. The teaching objectives of this lesson are clear and simple: to understand the meaning of the countdown, to find the method of countdown, and to write a number skillfully and accurately Countdown, and develop the ability to observe, summarize, reason, and generalize in inquiry activities. There is no doubt, however, that there is no doubt that there are few teachers who choose to attend this course either in large-scale open classes or through inter-peer communication. Only from its own content, teaching objectives and before and after