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《11～20各数的认识》是人教版课标实验教材《数学》一年级上册的教学内容。案例一本课教学的对象为一所农村小学的学生,由于该农村小学的条件所限,执教者未能使用现代教育技术设备。片断一：利用学生的生活资源师(和蔼可亲地)：同学们,来,拿出小手晃一晃。(学生纷纷伸出小手,跟着教师一起活动)师：看一看,我们的小手有几个手指头呀?生(异口同声)：10个。师：我们不仅有10个手指头,而且有10个脚趾头,在日常生活中,有很多物体的个数是10。还有比10大的数吗? (大部分学生脱口而出“有”,叽叽喳喳地说开来,
“Understanding of each number from 11 to 20” is the teaching content of the first grade of mathematics classbook experimental teaching material of the PEP. Case 1 The object of this course is for a rural primary school pupil, who is unable to use modern educational technology and equipment because of the conditions of the rural primary school. Piece one: the use of student life resource division (amiable manner): students, come up with a small hand shake flash. (Students have extended their little hands and followed the teacher’s activity.) Teacher: Look how many fingers are there in our little hands? Students (in unison): 10. Teacher: Not only do we have 10 fingers, but 10 toes. In our daily life, we have 10 objects. There are more than the number of 10? (Most students blurted out “yes,” twitter said,