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问题:(人教版小学六年级上册,练习十三,第3题)用下面的方法可以测量没有标出圆心的圆的直径,请你试一试。这是一道习题,老师布置让学生思考:“还有哪些测量圆直径的方法呢?”结果,学生的作为和表现让我们大吃一惊,我们体会到学生的潜能是巨大的。现将学生对这一问题的想法写出来,供读者参考。学生一:制作了一个测量直径的专用皮尺圆的周长c=πd(d表示圆的直径),若π取3.14,当d等于1米时,圆的周长c等于3.14米,将皮尺的3.14米刻度点定为1米,把这个长度等分100等份,每
Question: (PEP sixth graders, practice thirteen, third questions) can be measured using the following method does not indicate the center of the circle diameter, please give it a try. This is an exercise in which the teacher is arranged for the student to think about: “What else are the methods of measuring the diameter of the circle?” As a result, students’ behavior and performance surprise us and we realize that the potential of students is enormous. The students now write down the idea of this issue, for readers reference. Student 1: We make a special circumcircle circumference c = πd (d represents the diameter of the circle). If π is 3.14, when d is equal to 1 meter, the circumference of the circle c is equal to 3.14 meters. The 3.14 meter calibration point is set at 1 meter and the length is equally divided into 100 equal parts