论文部分内容阅读
我觉得培养学生思维的严密性与合理性在小学数学教学中是不可忽视的。前不久,我听了四年级的一堂数学课,教学内容是“能被3整除的数的特征”。任课老师在让学生分别说出1、2、3、4……31、32、33等各数的3倍的数和之后,引导学生观察3、6、9、12……93、96、99等3的倍数的特征,然后,归纳出“一个数的各位上的数的和能被3整除,这个数就能被3整除”以后,立即出示第一组练习题,让学生根据上述特征判
I think the rigor and rationality of cultivating students' thinking can not be neglected in elementary mathematics teaching. Not long ago, I listened to a math class in fourth grade, teaching content is “the characteristics of the number can be divisible by 3”. The teacher instructs the students to observe 3, 6, 9, 12 ... after having the students say 3, 3, 4 ...... 31, 32, 33, And then multiplied by 3, and then concluded that “the sum of the numbers on each digit of a number can be divisible by 3, this number can be divisible by 3”, immediately produce the first set of exercises so that students can according to the above characteristics