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星期三上午我们分别听了陆红芳老师一(1)班和陈燕老师一(3)班上的一堂数学课,内容都是两位数加整十数、一位数。记得在新课教完有这样一个巩固题:刚才我们学了45+30=75和45+3=48两道题的计算方法,我们都知道它们是先算什么,再算什么了,那么,你们能说说这两道题的计算方法有什么不同吗?一(1)班的学生在陆老师的引导下说得比较顺。他们是这样说的:45+30=75,是先算40+30=
On Wednesday morning, we listened to a math class taught by Teacher Lu Hongfang (1) and Teacher Chen Yan (3) respectively, both in double digits and in whole tenths and in single digits. I remember in the new lesson taught there is such a consolidation problem: We have just learned 45 +30 = 75 and 45 + 3 = 48 two questions calculation method, we all know that they are first what to count, and then count what, then, Can you tell us the difference between the two calculation methods? One (1) class of students under the guidance of Miss Lu more smoothly. They say this: 45 + 30 = 75, is the first count 40 +30 =