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【案例】“估算”(北师大版教材六年级下册“数与代数”总复习)。(一)回顾与交流。师:估算在我们日常生活中有着广泛的应用。想一想:在生活、学习中哪些时候要用到估算?它有什么作用
【Case】 “Estimation ” (Beijing Normal University version of the sixth grade textbook under the “number and algebra ” total review). (A) review and exchange. Teacher: Estimation has a wide range of applications in our daily life. Think about: When to use life in learning, estimation and what is the role?