三年级数学下册2.3《平移和旋转》教案北师大版.doc

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1、1平移和旋转教学设计教学目标:1、结合学生的生活经验和实例,感知平移与旋转的现象。2、使学生学会直观地判断、区别平移与旋转的现象。3、通过学生活动,发展学生的空间观念,培养学生的观察能力和动手操作能力,培养学生的合作意识,让学生在合作中交流、学习、互动。教具:多媒体课件教学过程:一、引入课题谈话导入师:现在是什么季节?春季你喜欢做什么?小朋友们,你们到大连发现王国玩过吗?到游乐场你玩过什么?你能说说这个游戏的运动方式是怎么样的吗?生:回答师:这么多游戏可能有的玩过,有的没有玩过,没有关系,今天我们一起走进游乐场,不过我有一个小小的要求,一会我们进去以后,不管你坐在哪个游乐项目上,你要用你的动作

2、,声音和表情把你坐在上面的感觉表现出来。播放视频二、初步感知1、同学们,快坐好,开心一刻已经过去,笑声过去要有思考,刚才这么多项目中,你能不能把坐在上面的感觉,比如说这个游戏的运动方式是怎么样的?师:像这样做直线运动的一种运动方式我们管他叫平移(板书)2、接下来想请 6 位小朋友到前面来,首先把你喜欢的游戏摘下来,然后说说这个游戏的运动方式是怎样的?3、我们通过刚才到游乐场,初步体会了什么是平移,什么是旋转,接下来,请小朋友们看,这是小兰,谁愿意为小兰做平移运动?听好老师的口令,对了下面的小朋友就击下掌。4.请小朋友们闭上眼睛, ,你能否相出一个平移的动作或者旋转的动作,同桌相互说一说5、现实生活中平移和旋转对我们有什么用,你能举出几个例子吗?三、巩固练习书上 28 页,练一练 1,2四、体验价值,畅谈收获同学们你们认为楼房会搬家吗播放视频玩游戏,听口令,做动作2

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