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有理数复习设计思
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有理数复习设计思
1.
有理数复习设计思路有理数复习设计思路 宁波十九中学黄伟建宁波十九中学黄伟建 QQQQ 群:群: 8873026888730268 黄伟建博客:黄伟建博客:
nbhwj.comnbhwj.com
2.
设计思路一设计思路一 有理数意义和分类属于概念,不予复习有理数意义和分类属于概念,不予复习 。。 有理数运算法则数量众多,学生几乎没有理数运算法则数量众多,学生几乎没 有出现因为遗忘法则而不会计算的现象有出现因为遗忘法则而不会计算的现象 。。
可以由计算器代替的有理数的运算,不可以由计算器代替的有理数的运算,不 予复习。予复习。 有理数大小比较也可以由计算器代替,有理数大小比较也可以由计算器代替, 不予复习。不予复习。 复习不一定要面面俱到。
3.
设计思路二设计思路二 有理数运算重在应用,所以本课的运算有理数运算重在应用,所以本课的运算 大多都在具体情境下进行。大多都在具体情境下进行。 数形结合是初中数学的重要内容,本课数形结合是初中数学的重要内容,本课 就数轴进行了数形结合的训练。就数轴进行了数形结合的训练。
初三复习重在综合,本课问题的选择结初三复习重在综合,本课问题的选择结 合了相似形、函数和许多实际问题。合了相似形、函数和许多实际问题。 培养学生的多种的能力是初三数学复习培养学生的多种的能力是初三数学复习 的重点。的重点。
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