2021年人教版四年级数学下册《轴对称》教案.pdf

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1、精品文档2016 全新精品资料-全新公文范文-全程指导写作 独家原创1/6人教版四年级数学下册轴对称教案人教版四年级数学下册轴对称教案教学内容：人教版小学数学四年级下册第七单元82-83页例 1-例 2.教学理念：本课的教学充分利用多媒体教学手段有机地整合丰富的生活资源，充分调动学生学的积极性，使学生在兴趣盎然中展开学习，在美的感受中积极探索，在动手操作中形成学习能力，努力地探索解决问题的方法，大胆地发表自己的观点。旨在让学历“做数学”的全过程，使学生的知识技能、学习能力及情感意志得到统一和谐的发展。教材分析：本节内容让学生进一步认识轴对称图形，探索图形成轴对称的特征和性质，学习在方格纸上画出

2、一个图形的轴对称图形的另一半，发展空间观念。教材的编排，首先注意利用学生已有知识引导学生探索新知识，例如，探索图形成轴对称的特征和性质，先让学生复习轴对称图形和画对称轴，再让学生观察轴对称图形的特征和画出一个轴对称图形的另一半，从而使学生在已有知识的基础上加深对轴对称图形特征的认识。其次，加强直观教学图形的特征，例如利用多媒体手段的优势，化静为动，让学生明确轴对称的含义。学情分析：学生在以前的学习中，初步感知了生活中的精品w o r d 可编辑资料-第 1 页，共 6 页-精品文档2016 全新精品资料-全新公文范文-全程指导写作 独家原创2/6对称、平移和旋转现象，初步认识了轴对称图形，能在

3、方格纸上画简单的轴对称图形或画出一个简单图形沿水平或垂直方向平移后的图形。教学目标：知识与技能：会画一个图形的轴对称图形，掌握画图的方法和步骤：先画出几个关键的对称点，再连线。过程与方法：通过观察、操作等活动，在方格纸上补全一个轴对称图形。情感态度和价值观：让学生在探索的过程中进一步增强动手操作能力，发展空间观念，培养审美观念和学习数学的兴趣。教学重点：1.认识轴对称图形的特点，建立轴对称图形的概念。2.能在方格纸上画出一个轴对称图形的另一半。教学难点：探索某些轴对称图形的画法。教学策略：演示法、观察法和探究法，利用多媒体手段的优势化静为动，突破难点，并放手让学生自主探索，在动手折一折、画一画

4、、找一找等活动中，切身体验“做数学”的全过程，感受学习数学的快乐。教学准备：教师：一体机、多媒体教学课件、方格纸。学生：学生练习题、各种平面图形等学习材料一份。教学过程：精品w o r d 可编辑资料-第 2 页，共 6 页-文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1

5、L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z

6、9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9

7、I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10

8、Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O

9、7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:C

10、P9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6精品文档2016 全新精品资料-全新公

11、文范文-全程指导写作 独家原创3/6一、观察导入，谈话激趣 1.课前交流：（同学们只要回答是或不是）你们四年级的同学吗？是四一班的吗？是我们年级最棒的吗？是课堂上最愿意动脑的吗？是最善于观察的吗？（设计意图：从轻松话题引入，激发学生的兴趣。）2.善于观察的孩子们请看大屏幕，读出我们今天要学习的课题。（课件出示反的课题）3.请同学们做动作，帮老师把课题摆正。设计意图：利用多媒体手段创设了有趣的导入情境，一开始就将学生带入了轴对称的情景中。二、联系生活，总结概念 1.观察图形。（课件出示轴对称图形）思考：这些图形都是轴对称的吗?你是怎样发现这一特点的？（生：观察出来的）用眼睛直接观察会不会出现偏差

12、？你能想办法进行验证吗？（学生拿出学具同桌合作动手操作，并请几位同学上讲台边演示边汇报，教师强调“对折”，“完全重合”）设计意图：利用多媒体手段呈现出现实生活中利用对称、平移和旋转设计出的美丽的事物和图案，既激发了学生学习的积极性，又唤醒了学生已有的知识和生活经验，使学生在兴趣盎然中展开学习，同时让学生在欣赏图形变换所创精品w o r d 可编辑资料-第 3 页，共 6 页-文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2

13、 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文

14、档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2

15、O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7

16、C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T

17、6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7

18、K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2

19、U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6精品文档2016 全新精品资料-全新公文范文-全程指导写作 独家原创4/6造出的美好事物的过程中，进一步体会数学的价值。2.总结概念（1）将图形沿着一条直线对折，如果直线两侧的部分能够完全重合，这样的图形叫做轴对称图形。（2）观察折痕：折痕所在的这条直线叫做他的对称轴.设计意图：学生通过动手折一折，自然的将轴对称图形和对称轴的概念慢慢完善，培养了学生的观察能力、动手能力和语言表达能力。3.学生朗读一遍 4.画一画（长方形、正方形、任意三角形、等腰三角形、等边三角形、任意梯形、等腰梯

20、形、平行四边形。圆形）在数学纸上画出图案的对成轴。（投影仪展示学生作品）设计意图：这一环节的设计，再次加深了学生对对称轴是直线的理解，展示学生作品时强调对称轴是直线，可以向两端无限延伸，画对称轴时要用虚线来画。5.出示格桑花，与生活紧密联系学生观察摘掉花瓣的格桑花，并说出对称轴在哪里?有几条？设计意图：出示我校的校花格桑花，让所学知识生动的与身边的事物联系起来，激发了学生学习的兴趣，同时让学生了解生活中处处都有数学。三、观察探索，认识轴对称性质。精品w o r d 可编辑资料-第 4 页，共 6 页-文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:C

21、P9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN

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24、:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4

25、HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2

26、ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档

27、编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6精品文档2016 全新精品资料-全新公文范文-全程指导写作 独家原创5/6 1.出示树叶红点图学生找一找，红点与哪个点是一对对应点设计意图：通过一个有趣的红点游戏，活跃了课堂气氛，同时无形中渗透对应点的知识。2.探究轴对称图形的特征(投影仪出示教材82 页例一)提问：看一看，数一数，你发现了什么？（生：它是轴对称图形；每一组对应点到对称轴的距离相等，对应点

28、的连线垂直于对称轴）学生自主探究后汇报。设计意图：让学生亲自去实践，用数方格的方法去再次判定是否成轴对称，让学生进一步发现轴对称的性质，进而使学生对轴对称的认识从经验上升到理论。3.学习在方格纸上画出轴对称图形的另外一半（电子白板画出教材83 页例 2）(1)提示：根据特点，怎样画准确还节省时间，同桌交流后再画 (2)学生汇报：左右两边对应点到对称轴的距离相等；画图时，只要找到左边图形中几个转折位置的关键点的对应点，再把各个点顺次连起来。4.根据学生汇报利用白板中的数学工具作图。5.总结画法：找关键点-描对称点-顺次连线 6.展示学生作品。精品w o r d 可编辑资料-第 5 页，共 6 页

29、-文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7

30、K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2

31、U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P

32、1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6

33、I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1

34、L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z

35、9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6精品文档2016 全新精品资料-全新公文范文-全程指导写作 独家原创6/6设计意图：这一环节的设计，教师放手让学生自主探索，在实践的过程中进一步内化知识，注重了学生个性画法的交流与评议，在评议的过程中突出重点，突破难点。四、生活中的应用课件出示飞机起飞画面、生活

36、中的美丽的轴对称图。五、全课小结（说说你的收获）设计意图：通过总结整理，梳理知识，在头脑中形成清晰地知识结构。六、实践操作，深化思维。课后请大家在方格纸上设计美丽的轴对称图形。设计意图：教师设计了创造性的作业，激发学生的创作欲望，让学生在巩固新知的过程中感受轴对称变换所创造出的美，感受数学源于生活，体会数学的价值，培养学生运用数学的意识。七、板书设计轴对称图形如果一个图形沿着一条直线对折，两侧的图形能够完全重合，这个图形就是轴对称图形。折痕所在直线叫做对称轴。画法：找关键点-描对称点-顺次连线精品w o r d 可编辑资料-第 6 页，共 6 页-文档编码:CP9I6I7K2O4 HN10Z1

37、L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z

38、9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9

39、I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10

40、Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O

41、7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:C

42、P9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6文档编码:CP9I6I7K2O4 HN10Z1L2U7C2 ZH4O7Z9P1T6