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2019年10月12日,四年级数学组全体老师在四(4)班开展教研活动,由李玉德老师执教《自然数》。这是一次意义非凡的教研活动,是本校一年一度的“秋实杯”优质课比赛前的磨课阶段。
","type":1},{"img_height":492,"img_url":"https://ss-mpvolc.meipian.me/users/19447131/ff6584a0-264a-11ea-a544-fb6ff9e98871__png.heic","img_width":314,"is_origin":false,"source":0,"text":" 《自然数》是冀教版四年级《倍数与因数》单元第一课时。教材首先呈现了两个儿童在夜晚数星星的情境,通过富有生活情趣的儿童数星星情境的真实再现和兔博士的话来介绍自然数的概念。教材把学生感受到的“星星真多”与“自然数是无限的”有机结合起来,使学生获得对自然数的初步的体验。
","type":1},{"img_height":494,"img_url":"https://ss-mpvolc.meipian.me/users/19447131/09c0bb90-264b-11ea-a544-fb6ff9e98871__png.heic","img_width":330,"is_origin":false,"source":0,"text":" 接着教材通过用直线上的点表示自然数,引导学生观察、发现自然数的特征。
","type":1},{"img_height":900,"img_url":"https://ss-mpvolc.meipian.me/users/19447131/fda41d885f2a9a656b87aaefa3b0683f__jpg.heic","img_width":1200,"is_origin":false,"source":0,"text":" 然后,教材呈现了丫丫和聪聪到电影院看电影的场景,通过他们找座位号的对话,由我们生活中所说的单数、双数很自然的引出奇数、偶数的概念。在“试一试”中设计了在1-30之间写出连续奇数、连续偶数的问题,让学生在自主写数、观察讨论中,了解奇数、偶数的特征。
","type":1},{"img_height":900,"img_url":"https://ss-mpvolc.meipian.me/users/19447131/5ee2b3670c4930c3123773c9134a2e19__jpg.heic","img_width":1200,"is_origin":false,"source":0,"text":" 针对教材编写意图,李老师首先让学生在轻松愉悦的气氛中开始学习,设计了“猜谜语”的游戏活动,然后在数星星数量的过程中认识自然数。接着让学生明白生活中的自然数无处不在,并让学生说一说生活中的自然数,让学生感受到数学与生活的密切联系。
","type":1},{"img_height":900,"img_url":"https://ss-mpvolc.meipian.me/users/19447131/33660133b9270b51e42e270a7040b524__jpg.heic","img_width":1200,"is_origin":false,"source":0,"text":" 接下来让学生观看小视频《用直线上的点表示自然数》,然后分组讨论“你发现了自然数的哪些特征?”
","type":1},{"img_height":900,"img_url":"https://ss-mpvolc.meipian.me/users/19447131/8a4b1737b7bd742cba5259b652ebb0c2__jpg.heic","img_width":1200,"is_origin":false,"source":0,"text":" 4人小组在展示发现了自然数的特征。
","type":1},{"img_height":900,"img_url":"https://ss-mpvolc.meipian.me/users/19447131/1df214c9b74b6847eb405d42c7bb6d9a__jpg.heic","img_width":1200,"is_origin":false,"source":0,"text":" 接下来结合电影院座位号的布置,设计了让学生帮丫丫和聪聪寻找座位号,目的是引出对奇数、偶数的认识。
","type":1},{"img_height":900,"img_url":"https://ss-mpvolc.meipian.me/users/19447131/5175402730a3f18113617325f168c528__jpg.heic","img_width":1200,"is_origin":false,"source":0,"text":" 然后设计了活动二:分组完成“试一试”的练习,探究奇数、偶数的特征并小组展示,全班同学既是倾听者也是评价者,同时还可以进行质疑和补充。
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","type":1},{"img_height":900,"img_url":"https://ss-mpvolc.meipian.me/users/19447131/3bb95f45b5c127ccbe4fb3a16e4a0a1c__jpg.heic","img_width":1200,"is_origin":false,"source":0,"text":" 最后通过两道题有层次的练习题来对本节课的知识点加以梳理和巩固。
","type":1},{"source":0,"text":" 总之,整堂课教学设计都离不开学生的自主学习、合作探究的过程,真正实现学生的主体地位。并且以简洁、清晰、有趣、贴近生活为准则,让学生在玩中学,学中乐,真正打造一节属于学生的“快乐课堂”。
","type":1},{"source":0,"text":"图片来源:黄海琪
文字编辑:李玉德
审 核:四年级数学组
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","type":1},{"img_height":492,"img_url":"https://ss-mpvolc.meipian.me/users/19447131/ff6584a0-264a-11ea-a544-fb6ff9e98871__png.heic","img_width":314,"is_origin":false,"source":0,"text":" 《自然数》是冀教版四年级《倍数与因数》单元第一课时。教材首先呈现了两个儿童在夜晚数星星的情境,通过富有生活情趣的儿童数星星情境的真实再现和兔博士的话来介绍自然数的概念。教材把学生感受到的“星星真多”与“自然数是无限的”有机结合起来,使学生获得对自然数的初步的体验。
","type":1},{"img_height":494,"img_url":"https://ss-mpvolc.meipian.me/users/19447131/09c0bb90-264b-11ea-a544-fb6ff9e98871__png.heic","img_width":330,"is_origin":false,"source":0,"text":" 接着教材通过用直线上的点表示自然数,引导学生观察、发现自然数的特征。
","type":1},{"img_height":900,"img_url":"https://ss-mpvolc.meipian.me/users/19447131/fda41d885f2a9a656b87aaefa3b0683f__jpg.heic","img_width":1200,"is_origin":false,"source":0,"text":" 然后,教材呈现了丫丫和聪聪到电影院看电影的场景,通过他们找座位号的对话,由我们生活中所说的单数、双数很自然的引出奇数、偶数的概念。在“试一试”中设计了在1-30之间写出连续奇数、连续偶数的问题,让学生在自主写数、观察讨论中,了解奇数、偶数的特征。
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","type":1},{"img_height":900,"img_url":"https://ss-mpvolc.meipian.me/users/19447131/33660133b9270b51e42e270a7040b524__jpg.heic","img_width":1200,"is_origin":false,"source":0,"text":" 接下来让学生观看小视频《用直线上的点表示自然数》,然后分组讨论“你发现了自然数的哪些特征?”
","type":1},{"img_height":900,"img_url":"https://ss-mpvolc.meipian.me/users/19447131/8a4b1737b7bd742cba5259b652ebb0c2__jpg.heic","img_width":1200,"is_origin":false,"source":0,"text":" 4人小组在展示发现了自然数的特征。
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","type":1},{"source":0,"text":"图片来源:黄海琪
文字编辑:李玉德
审 核:四年级数学组
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