【教学内容】人教版六年级上册第四单元。【教学过程】一、初步感知圆,导入新课1.同学们,看看老师手里拿的是什么?(溜溜球)。听说我们班有些同学溜溜球玩得可好了,谁上来给大家表演一下,让我们开开眼界(学生表演)。老师有个与众不同的玩法,你们想看吗?(想)。那就请同学们边欣赏边仔细观察,神奇的溜溜球在空中画了一个什么图形?老师用溜溜球表演。(学生齐答:画了一个圆)2.钟面上的指针走过的路 Teaching content PEP sixth grade on the fourth unit. 【Teaching process】 First, the initial perception circle, into the new lesson 1. Classmates to see what the teacher’s hand (yo-yo). I heard that some of our classmates yo yo playing well, who came up to show everyone, let us have an eye start (student performance). Teacher has a unique gameplay, do you want to see? Then students are invited to observe carefully observed, the magical yo-yo in the air drew a what kind of graphic? The teacher performed with the yo-yo. (Students Qi answer: Draw a circle) 2. The clock on the road through the pointer