二年级数学下册第2单元表内除法(一)整理和复习教案2新人教版.doc

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1、1整理和复习。复习目标:1、让学生在具体的情境中体会除法运算的含义。2、会读、写除法算式,知道除法算式各部分的名称。3、使学生初步认识乘、除法之间的关系。能够比较熟练地用 26 的乘法口诀求商。4、使学生初步学会根据除法的意义解决一些简单的实际问题。5、结合教学使学生受到爱学习、爱劳动、爱护大自然的教育。培养学生认真观察、独立思考等良好的学习习惯。复习重点:用 26 的乘法口诀求商的方法及解决问题。复习难点:除法的含义和用除法运算解决简单的实际问题。复习过程:1、小组比赛背乘口诀。2、让四人小组说说本单元你学到了什么知识。3、全班汇报四人小组讨论的结果。4、师生共同梳理第二单元的内容。 (1)

2、除法的含义。 (2)用 26 的乘法口诀求商。(3)用除法解决简单的实际问题。5、从上面的(1) 、 (2) 、 (3)方面进行复习。(1)除法的意义。A、老师呈现课本 35 页第 1 题的实物图,让学生根据实物图填写乘法算式和除法算式,并要求学生“指出除法算式中的被除数、除数、商” 。B、让学生相互说说这 3 个算式之间的关系。C、练习。 (老师出示一些乘法算式、除法算式,让学生说出算式中的被除数、除数、商。再出示一些用同一句乘法口诀计算的算式,让学生进一步解乘法和除法之间的关系。 )(2)用 26 的乘法口诀求商。A、老师出示小鸟、小鹿选汽球的图面。再采用倒计时的方法抢算。B、让算得快的小朋友结合具体的算式说说怎样想商。C、再组织以四人小组为参赛单位的摘平果游戏。让学生在欢乐的气氛中熟练用乘法口诀求商的方法。(3)用除法解决简单的实际问题。A、老师出示课本 35 页工人叔叔运水果的情境图。先让学生观察,再让学生说说你从这幅图中得到了哪些数学信息。B、让学生根据得到的信息提出数学问题。重点展示用除法计算的问题。C、让学生独立解决问题。D、让学生在四人小组中交流自己解决问题的方法。6、师生共同小结本节课的收获。2

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