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学生是数学学习的主人,有效的、成功的课堂教学应尊重学生的主体地位,激励学生创造性的学习。近日,笔者有幸听了四年级的“加、减法的一些简便运算”这节课,令人耳目一新,感受颇深。 师:请同学们想一想264+98这道题怎样计算简便? 学生有的在思考,有的在练习本上尝试,还有的学生轻声地讨论……然后组内互相交流并汇报简便算法。 生1:我是这样简算的:把264分成262和2,2和98可以凑成100。264+98=262+2+98=262+(2+98)=262+100+362。
Students are the masters of mathematics learning. Effective and successful classroom teaching should respect the students' dominant position and encourage students to learn creatively. Recently, I was fortunate enough to listen to the fourth grade “add, subtract some of the simple operation,” this lesson, refreshing, deep feelings. Teacher: Ask the students to think 264 +98 how to calculate this problem is simple? Some students thinking, some in the exercise of the book, and some students whispered to discuss ... and then exchange and report within the group simple algorithm . Health 1: I was so simple: Split 264 into 262 and 2, 2 and 98 to make 100.264 + 98 = 262 + 2 + 98 = 262 + (2 + 98) = 262 + 100 + 362.