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《乘法分配律》历来是难讲的一节课,之所以难讲一是知识本身有难度。二是学生发现定律后,即使理解了,用语言表达出来也有一定的难度。怎样教学才能让学生学得轻松自得,教师“教”得行云流水?为此,我们进行了两次教学实践。第一次教学:【在“读”中遭遇尴尬】总结规律时,我们试图从众多算式的读法中,让学生感悟到:两个数的和与一个数相乘,可以把它们
“Multiplication distribution law” has always been difficult to say a lesson, the reason why it is difficult to say one is the difficulty of knowledge itself. Second, students find the law, even if understood, expressed in words have a certain degree of difficulty. How to teach students to easily enjoy themselves, teachers “teaching ” To be smooth in the clouds? To this end, we conducted two teaching practices. First Teaching: Embarrassing Encounters in Reading In order to summarize the law, we try to make students realize from the reading of many formulas that the sum of two numbers is multiplied by a number,