二年级数学上册第4单元表内乘法(一)2_6的乘法口诀(乘加和乘减)练习教案2新人教版.doc

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12-6 的乘法口诀(乘加和乘减)课 题 练习十二 课 型 复习课教学目标进一步对乘加、乘减算式的理解,并能解决生活问题。 重点 进一步对乘加、乘减算式的理解难点 进一步对乘加、乘减算式的理解教具课件投影教 学 过 程1第 1 题 53-5=5= 53+5= 54+5= 52= 45= 55= 学生根据根据上下两个式子的对比,说说你发现了什么?为什么得数会相同?同桌互相说一说,指明说2以植树的情景呈现练习,激发学生的兴趣和参与的积极性。3。通过计算练习,进一步巩固乘加和乘减的运算顺序。、这个题目通过图形让学生体会“多出”与乘加的关系、“残缺”与乘减的关系,尽量鼓励学生用多种方法计算。板书设计2教学反思

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