计算练习,是枯燥的。如何让计算练习也好玩呢?在学生学习了“两位数加、减两位数”之后,我设计了这样的活动。首先,我让每位学生在头脑中想两个不同的数字,然后用它们组成两个两位数:一个较大的数,一个较小的数。接着,我让学生把自己组成的数和大家说一说。学生非常踊跃地汇报,他们都很好奇,下一步会做什么呢?我告诉他们:“请你用刚才自己组成的较大的数减较小的数,算一算相差多少。”当学生求出第一个差以后,用好奇的眼神继续追问:“接下 Calculation exercises are boring. How to make computational exercises fun? After students learned ”double-digit plus or minus two-digit“, I designed such an event. First, let each student think of two different numbers in his head, and then use them to make two double digits: a larger number, a smaller number. Then, I asked the students to talk about the number of themselves. Students report very enthusiastically, they are very curious, the next step will do? I tell them: ”Please use the larger number you just made up a smaller number, count the difference.“ Students find the first difference, with curious eyes continue to ask: ”take the next