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1、学习好资料欢迎下载一上:认识立体图形教学设计一、教学目标(一)知识与技能在分类、观察、动手操作等活动中,直观认识长方体、正方体、圆柱、和球,并能辨认和区别这些图形。(二)过程与方法在对图形进行分类的活动中渗透分类的思想。(三)情感态度和价值观培养学生初步的观察、想象、表象思维和语言表达的能力,初步建立空间观念,初步感受数学与实际生活的联系。二、目标分析这部分内容是学生学习图形与几何的开始,学生虽然没有经历系统学习图形知识,但是学生从小就玩积木,在玩的过程中积累了大量的生活经验。因此本课就从玩积木开始切入,使学生在玩的过程中了解、感知这几种图形的特征。三、教学重难点教学重点:使学生能够初步认识长
2、方体、正方体、圆柱、球,能够正确识别这几种图形。教学难点:正确区分长方体和正方体。四、教学准备形状为长方体、正方体、圆柱、球的积木和实物。五、教学过程学习好资料欢迎下载(一)激趣引入导语:今天开始学习图形。(出示课件)我们和小熊一起来认识图形吧。这些图形很有趣,就像我们小朋友一样,有的很乖,有的很淘气。【设计意图】通过采用富有童趣的提问方式,给学生创设愉悦的学习氛围,激发学习兴趣。引导学生观察物体,意识到些物体是有区别的,为了解图形的特征做准备。(二)初步认识图形的本质特征1认识球。(1)找一找:哪种图形最淘气?为什么认为它最淘气?(2)摸一摸:找出学具中的球摸一摸,发现球的特征:圆乎乎的,可
3、以任意滚动。(3)贴图:把球画在纸上,就是这样的。2认识圆柱。(1)找一找:哪种图形比较淘气,会顺着一个方形滚动,但不会随意滚动。(2)摸一摸,试一试:在做操作中感受发现圆柱的特征:除了有两个平平的面,侧面是弯的,上下一样粗,可以来回滚动,但不能随意滚动。(3)贴图:像这样有两个平平的面,一个弯弯的面,并且上、下一样粗的图形叫圆柱。(4)出示短粗形圆柱:这个图形是圆柱吗?说一说理由吧。文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q
4、7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7
5、O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10
6、K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H
7、6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6
8、F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR
9、10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR
10、6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8学习好资料欢迎下载在学生回答中,教师要帮助学生抽象出圆柱的外部特征。平平的面是圆形;上下一样粗;侧面是弯的。3认识长方体和正方体。(1)找长方体、正方体的相同点。让学生摸一摸、试一试,感受并发现长方体、正方体的特征:12 条棱、8 个顶点、6 个平平的面。(2)找长方体、正方体的不同点。引导学生对比长方体和正方体的不同:正方体6 个面都一样大。而长方体6 个面不是一样大的。(3)辨别扁的长方体。教师拿出扁长方体,把正方形的一面对准学生,让学生辨别这是什么图形,引发学生思维
11、冲突,引导学生辩论出它为什么是长方体。小结:我们通过,看一看、摸一摸、试一试的方法,认识了球、圆柱、长方体、正方体这四种图形。【设计意图】在具体事物的辨析中,初步建立图形的特征,为后续进一步认识图形奠定基础。(三)再次分类认识图形特征1为图形分类让学生将桌上的所有图形分类。此时,学生很容易运用刚刚掌握的知识将这些图形分成4 类。2找朋友游戏:文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:
12、CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7
13、HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 Z
14、M3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编
15、码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G
16、7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3
17、 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文
18、档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8学习好资料欢迎下载教师介绍游戏玩法。师:看到我手中举起的物体,请大家根据它的形状判断它是那种图形,然后快速找到这种图形,它们就互为好朋友。我说嗨、嗨我的朋友在哪里?你们要说嗨、嗨你的朋友在这里。然后大声叫出他的名字。想玩吗?3请举出生活中还有哪些物品的形状是球、圆柱、长方体、正方体。小结:其实生活中许多物品的形状都是我们今天认识的图形,如果你发现了,请告诉你的爸爸、妈妈。【设计意图】通过分类活动,学生对物体的特征会更加清晰;小游戏将图形与生活中的实物建立联系。(四)课堂练习1摸一摸图形。教师准备一个大口袋,请你按要
19、求摸出相应的图形。(1)老师与一位学生演示莫图形的过程。(2)每两个学生之间摸图形。2连一连。完成材第37 页第 1 题。引导学生说理由。3数一数。完成教材第37 页第 2 题。【设计意图】在游戏中不断巩固所学知识,使具体的实物与图形表象和名称建立起联系。(五)总结今天你认识了哪些图形?回家讲给爸爸、妈妈听,好吗?文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 H
20、R6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM
21、3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码
22、:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7
23、 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3
24、ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档
25、编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8文档编码:CR10K6T1M2G7 HR6H6Q7R5V3 ZM3K6F7O4B8