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教研是一所学校的生命力,为了更好地帮助青年教师成长,我校于2023年12月6日在数学教研组组长、海南省省级骨干教师蔡山霞老师的带领下,开展了我校第15周数学教研组活动。活动分为以下三项议程:
一、由新入职教师杨家鑫老师执教《平行四边形的面积》
二、五年级组鸿雁教师、我校数学一级教师曾祥玉老师做《平行四边形的面积微讲座》
三、我校全体数学教师针对本节课进行评课交流
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1.利用重叠比较
2.求出面积
杨老师先邀请两位同学来到黑板上动手操作,利用重叠的方式进行比较面积。
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","text_del":0,"type":1,"video_del":0,"video_thumbnail_del":0,"vote_del":0,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNjM3ODcwOTUvNjNmZDRiMDA1ZjZjNDk4ZTkyYmM3MzUyMzdlODE1MTVfX2pwZWcuaGVpYw==/nickname/5LiJ5Lqa5biC5a6e6aqM5bCP5a2m/userid/NjM3ODcwOTU=/sign/ae9159a9175d4c3ab6a1afd2b5425c69"},{"audio_del":0,"ext":{"unique_id":"ae366e8d063416827ee725bbcbd8bdd0"},"img_del":0,"img_height":1122,"img_url":"https://ss-mpvolc.meipian.me/users/63787095/0c9bed07340d4e8696e2d7f83d2d5731__jpeg.heic","img_width":1496,"location_del":0,"sell_del":0,"source":0,"source_platform":"local","splicing_template_id":0,"text":"在整节课探究过程中学生在交流讨论中不断引发新思考,产生有价值的思考与探究,逐步走进数学问题的本质,自主建构知识体系,从而达到深度学习。最后杨老师带领孩子们欣赏了小学阶段思维导图的价值与魅力,本节课也探索了思维导图式的板书设计。
","text_del":0,"type":1,"video_del":0,"video_thumbnail_del":0,"vote_del":0,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNjM3ODcwOTUvMGM5YmVkMDczNDBkNGU4Njk2ZTJkN2Y4M2QyZDU3MzFfX2pwZWcuaGVpYw==/nickname/5LiJ5Lqa5biC5a6e6aqM5bCP5a2m/userid/NjM3ODcwOTU=/sign/ae9159a9175d4c3ab6a1afd2b5425c69"},{"audio_del":0,"ext":{"unique_id":"d14050be7ad41c43df9963b929a2f94f"},"img_del":0,"img_height":1122,"img_url":"https://ss-mpvolc.meipian.me/users/63787095/9a301bd09ccc47a59624f2709b7d5fb6__jpeg.heic","img_width":1496,"location_del":0,"sell_del":0,"source":0,"source_platform":"local","splicing_template_id":0,"text":"接下来是由曾老师做微讲座,曾老师从单元整体架构分析,学情分析,教材分析,教研分享,研训与反思等多方面进行深入探索。
","text_del":0,"type":1,"video_del":0,"video_thumbnail_del":0,"vote_del":0,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNjM3ODcwOTUvOWEzMDFiZDA5Y2NjNDdhNTk2MjRmMjcwOWI3ZDVmYjZfX2pwZWcuaGVpYw==/nickname/5LiJ5Lqa5biC5a6e6aqM5bCP5a2m/userid/NjM3ODcwOTU=/sign/ae9159a9175d4c3ab6a1afd2b5425c69"},{"audio_del":0,"ext":{"unique_id":"83ea4e81a12f2d08ebf5f9e7e90a0288"},"img_del":0,"img_height":1122,"img_url":"https://ss-mpvolc.meipian.me/users/63787095/cf09ce2dd2f04bb4b1d07ef71e77474b__jpeg.heic","img_width":1496,"location_del":0,"sell_del":0,"source":0,"source_platform":"local","splicing_template_id":0,"text_del":0,"type":1,"video_del":0,"video_thumbnail_del":0,"vote_del":0,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNjM3ODcwOTUvY2YwOWNlMmRkMmYwNGJiNGIxZDA3ZWY3MWU3NzQ3NGJfX2pwZWcuaGVpYw==/nickname/5LiJ5Lqa5biC5a6e6aqM5bCP5a2m/userid/NjM3ODcwOTU=/sign/ae9159a9175d4c3ab6a1afd2b5425c69"},{"audio_del":0,"ext":{"unique_id":"908c4b7532d87222ffbb375b86a401d2"},"img_del":0,"img_height":1122,"img_url":"https://ss-mpvolc.meipian.me/users/63787095/a62769a5946a4e0c9f72adc4e877c44c__jpeg.heic","img_width":1496,"location_del":0,"sell_del":0,"source":0,"source_platform":"local","splicing_template_id":0,"text":"通过不同教材版本之间的差异性以及各自特点,设计意图进行横向对比。
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首先:以课本和数学教学用书为辅,认真研读教材。
然后:做好磨课环节,组织同年级老师听课,做好听课记录,特别是要记录好授课老师需要改进的地方,以便授课结束后,一起进行探讨、改进教学思路和方法,重新整理教学流程。
最后:根据改进方案,重新上课展示,通过多次默课,敲定较好的教学方案。
","text_del":0,"type":1,"video_del":0,"video_thumbnail_del":0,"vote_del":0,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNjM3ODcwOTUvMDVhZTAwZjk4YWVjNGQyYmE2MWVmNTllNGI4ZmI4MGJfX2pwZWcuaGVpYw==/nickname/5LiJ5Lqa5biC5a6e6aqM5bCP5a2m/userid/NjM3ODcwOTU=/sign/ae9159a9175d4c3ab6a1afd2b5425c69"},{"audio_del":0,"ext":{"unique_id":"fb0493c641b177da4893a85e13221094"},"img_del":0,"img_height":2000,"img_url":"https://ss-mpvolc.meipian.me/users/63787095/7d3544497d57432f8750e492529d8417__jpeg.heic","img_width":1500,"location_del":0,"sell_del":0,"source":0,"source_platform":"local","splicing_template_id":0,"text":"在评课环节,我校数学组教师充分肯定了杨家鑫老师的教学能力,杨老师温文尔雅的教态,生动有趣的课堂设计让人印象深刻。课堂中,只有将平行四边形“割补”变成长方形,才能方便地计算出包含了几个面积单位。无形中渗透了“转化”的数学思想!为后面动手操作打下了坚实的基础。并在此基础上,初步沟通原来的平行四边形与转化后的长方形的联系,学生自然而然地就把本节课的难点突破了,自此,平行四边形为何要通过“割补”转化的道理,通过学生展示的“数方格”经验的发展与完善,得以深层次地建构。
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在探究过程中需让学生关注以下几点,进而达到深度建构。
①是不是随便剪一刀都能拼成长方形 ?
②剪下后如何变成长方形?
③观察原来的平行四边形和转化后的长方形,让学生发现它们之间有哪些等量关系。
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1.教学要具备教育机智,灵活应对课堂上的各种情况,让课堂上的衔接语更加生动自然,让每一节课流程结构更加清晰。
2.教师要多上公开课,多去锻炼自己,学会抓住课堂上学生的生成,让课堂更加丰富多彩。
3.要向书本学习,向课标学习,也要向专家名师学习。通过观看优秀教师的课例找到适合自己的教学设计,不断探索出属于自己的教学风格。
","text_del":0,"type":1,"video_del":0,"video_thumbnail_del":0,"vote_del":0,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNjM3ODcwOTUvYzNmMjEyZTZjMGFkNDc5ZmEyODVhMzYwOGM2NzI5N2ZfX2pwZWcuaGVpYw==/nickname/5LiJ5Lqa5biC5a6e6aqM5bCP5a2m/userid/NjM3ODcwOTU=/sign/ae9159a9175d4c3ab6a1afd2b5425c69"},{"audio_del":0,"ext":{"unique_id":"6fc9e95495d45fe26f146e4adbc9018c"},"img_del":0,"img_height":800,"img_url":"https://ss-mpvolc.meipian.me/users/63787095/8e860e957d3547a3a8641abb043c593d__jpeg.heic","img_width":800,"location_del":0,"sell_del":0,"source":0,"source_platform":"local","splicing_template_id":0,"text":"相信在蔡山霞老师的带领下,我校数学组教师一定会百尺竿头,更进一步。正如陶行知先生所说的:“处处是创造之地,天天是创造之时,人人是创造之人”的美好理想,通过本次教研活动,进一步加深了我校教师对如果上好一节课的认识、理解,增强了教师的理论水平和教学能力,为今后的教学将起到指导作用。每位教师也有了更明确的方向和目标,心中有目标,脚下方有路!
教研是一所学校的生命力,为了更好地帮助青年教师成长,我校于2023年12月6日在数学教研组组长、海南省省级骨干教师蔡山霞老师的带领下,开展了我校第15周数学教研组活动。活动分为以下三项议程:
一、由新入职教师杨家鑫老师执教《平行四边形的面积》
二、五年级组鸿雁教师、我校数学一级教师曾祥玉老师做《平行四边形的面积微讲座》
三、我校全体数学教师针对本节课进行评课交流
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","text_del":0,"type":1,"video_del":0,"video_thumbnail_del":0,"vote_del":0,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNjM3ODcwOTUvNjkwZjE1OGI2MDQ1NGRiOTk5MzgyMWY1ZDgwZmE5MjBfX2pwZWcuaGVpYw==/nickname/5LiJ5Lqa5biC5a6e6aqM5bCP5a2m/userid/NjM3ODcwOTU=/sign/ae9159a9175d4c3ab6a1afd2b5425c69"},{"audio_del":0,"ext":{"unique_id":"a9c913c1ba99e2ef31973d08a11e0bca"},"img_del":0,"img_height":1122,"img_url":"https://ss-mpvolc.meipian.me/users/63787095/2970093be89f49d0b39c832dcc7603e9__jpeg.heic","img_width":1496,"location_del":0,"sell_del":0,"source":0,"source_platform":"local","splicing_template_id":0,"text_del":0,"type":1,"video_del":0,"video_thumbnail_del":0,"vote_del":0,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNjM3ODcwOTUvMjk3MDA5M2JlODlmNDlkMGIzOWM4MzJkY2M3NjAzZTlfX2pwZWcuaGVpYw==/nickname/5LiJ5Lqa5biC5a6e6aqM5bCP5a2m/userid/NjM3ODcwOTU=/sign/ae9159a9175d4c3ab6a1afd2b5425c69"},{"audio_del":0,"ext":{"unique_id":"8f9b799043dd07d2f628192c9910836a"},"img_del":0,"img_height":1122,"img_url":"https://ss-mpvolc.meipian.me/users/63787095/2245757631084d9a9eab03b8fbd9a180__jpeg.heic","img_width":1496,"location_del":0,"sell_del":0,"source":0,"source_platform":"local","splicing_template_id":0,"text":"情境导入部分以比较两个花坛的大小(一个长方形、一个平行四边形)引入一个实际问题:两个花坛的面积哪个大?学生提出两种不同的方法:
1.利用重叠比较
2.求出面积
杨老师先邀请两位同学来到黑板上动手操作,利用重叠的方式进行比较面积。
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","text_del":0,"type":1,"video_del":0,"video_thumbnail_del":0,"vote_del":0,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNjM3ODcwOTUvMGY5M2ExMjYzZDM2NDY4OWFlZDFjYTBjN2Q4ZDQyNDRfX2pwZWcuaGVpYw==/nickname/5LiJ5Lqa5biC5a6e6aqM5bCP5a2m/userid/NjM3ODcwOTU=/sign/ae9159a9175d4c3ab6a1afd2b5425c69"},{"audio_del":0,"ext":{"unique_id":"55412123d04f84a1562e957cb4f22f80"},"img_del":0,"img_height":1122,"img_url":"https://ss-mpvolc.meipian.me/users/63787095/83203c7b88614d9f8993c669e30fe358__jpeg.heic","img_width":1496,"location_del":0,"sell_del":0,"source":0,"source_platform":"local","splicing_template_id":0,"text_del":0,"type":1,"video_del":0,"video_thumbnail_del":0,"vote_del":0,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNjM3ODcwOTUvODMyMDNjN2I4ODYxNGQ5Zjg5OTNjNjY5ZTMwZmUzNThfX2pwZWcuaGVpYw==/nickname/5LiJ5Lqa5biC5a6e6aqM5bCP5a2m/userid/NjM3ODcwOTU=/sign/ae9159a9175d4c3ab6a1afd2b5425c69"},{"audio_del":0,"ext":{"unique_id":"22354631dcf6d35540a687e1355c5c97"},"img_del":0,"img_height":1122,"img_url":"https://ss-mpvolc.meipian.me/users/63787095/6dbc57da054f4ca9b9f19779f3d28226__jpeg.heic","img_width":1496,"location_del":0,"sell_del":0,"source":0,"source_platform":"local","splicing_template_id":0,"text":"长方形的面积计算方法是长✖️宽,平行四边形的面积又怎么计算?杨老师启发学生将平行四边形转化为学过的图形来计算面积。教材呈现了学生思考、探索的过程,并结合直观图给出把平行四边形利用割补转化长方形的方法。
","text_del":0,"type":1,"video_del":0,"video_thumbnail_del":0,"vote_del":0,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNjM3ODcwOTUvNmRiYzU3ZGEwNTRmNGNhOWI5ZjE5Nzc5ZjNkMjgyMjZfX2pwZWcuaGVpYw==/nickname/5LiJ5Lqa5biC5a6e6aqM5bCP5a2m/userid/NjM3ODcwOTU=/sign/ae9159a9175d4c3ab6a1afd2b5425c69"},{"audio_del":0,"ext":{"unique_id":"87c9ab3e4dfb33ad09daab9ebbb08e86"},"img_del":0,"img_height":1122,"img_url":"https://ss-mpvolc.meipian.me/users/63787095/491f270115bc4d058c1e1b0c109feca9__jpeg.heic","img_width":1496,"location_del":0,"sell_del":0,"source":0,"source_platform":"local","splicing_template_id":0,"text_del":0,"type":1,"video_del":0,"video_thumbnail_del":0,"vote_del":0,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNjM3ODcwOTUvNDkxZjI3MDExNWJjNGQwNThjMWUxYjBjMTA5ZmVjYTlfX2pwZWcuaGVpYw==/nickname/5LiJ5Lqa5biC5a6e6aqM5bCP5a2m/userid/NjM3ODcwOTU=/sign/ae9159a9175d4c3ab6a1afd2b5425c69"},{"audio_del":0,"ext":{"unique_id":"a9ebb66adc0a559d28ba376e6443ef56"},"img_del":0,"img_height":1122,"img_url":"https://ss-mpvolc.meipian.me/users/63787095/63fd4b005f6c498e92bc735237e81515__jpeg.heic","img_width":1496,"location_del":0,"sell_del":0,"source":0,"source_platform":"local","splicing_template_id":0,"text":"学生动手操作,通过观察对比,让学生发现转化前后图形之间的等量关系,以此沟通两个图形之间的内在联系。
","text_del":0,"type":1,"video_del":0,"video_thumbnail_del":0,"vote_del":0,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNjM3ODcwOTUvNjNmZDRiMDA1ZjZjNDk4ZTkyYmM3MzUyMzdlODE1MTVfX2pwZWcuaGVpYw==/nickname/5LiJ5Lqa5biC5a6e6aqM5bCP5a2m/userid/NjM3ODcwOTU=/sign/ae9159a9175d4c3ab6a1afd2b5425c69"},{"audio_del":0,"ext":{"unique_id":"ae366e8d063416827ee725bbcbd8bdd0"},"img_del":0,"img_height":1122,"img_url":"https://ss-mpvolc.meipian.me/users/63787095/0c9bed07340d4e8696e2d7f83d2d5731__jpeg.heic","img_width":1496,"location_del":0,"sell_del":0,"source":0,"source_platform":"local","splicing_template_id":0,"text":"在整节课探究过程中学生在交流讨论中不断引发新思考,产生有价值的思考与探究,逐步走进数学问题的本质,自主建构知识体系,从而达到深度学习。最后杨老师带领孩子们欣赏了小学阶段思维导图的价值与魅力,本节课也探索了思维导图式的板书设计。
","text_del":0,"type":1,"video_del":0,"video_thumbnail_del":0,"vote_del":0,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNjM3ODcwOTUvMGM5YmVkMDczNDBkNGU4Njk2ZTJkN2Y4M2QyZDU3MzFfX2pwZWcuaGVpYw==/nickname/5LiJ5Lqa5biC5a6e6aqM5bCP5a2m/userid/NjM3ODcwOTU=/sign/ae9159a9175d4c3ab6a1afd2b5425c69"},{"audio_del":0,"ext":{"unique_id":"d14050be7ad41c43df9963b929a2f94f"},"img_del":0,"img_height":1122,"img_url":"https://ss-mpvolc.meipian.me/users/63787095/9a301bd09ccc47a59624f2709b7d5fb6__jpeg.heic","img_width":1496,"location_del":0,"sell_del":0,"source":0,"source_platform":"local","splicing_template_id":0,"text":"接下来是由曾老师做微讲座,曾老师从单元整体架构分析,学情分析,教材分析,教研分享,研训与反思等多方面进行深入探索。
","text_del":0,"type":1,"video_del":0,"video_thumbnail_del":0,"vote_del":0,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNjM3ODcwOTUvOWEzMDFiZDA5Y2NjNDdhNTk2MjRmMjcwOWI3ZDVmYjZfX2pwZWcuaGVpYw==/nickname/5LiJ5Lqa5biC5a6e6aqM5bCP5a2m/userid/NjM3ODcwOTU=/sign/ae9159a9175d4c3ab6a1afd2b5425c69"},{"audio_del":0,"ext":{"unique_id":"83ea4e81a12f2d08ebf5f9e7e90a0288"},"img_del":0,"img_height":1122,"img_url":"https://ss-mpvolc.meipian.me/users/63787095/cf09ce2dd2f04bb4b1d07ef71e77474b__jpeg.heic","img_width":1496,"location_del":0,"sell_del":0,"source":0,"source_platform":"local","splicing_template_id":0,"text_del":0,"type":1,"video_del":0,"video_thumbnail_del":0,"vote_del":0,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNjM3ODcwOTUvY2YwOWNlMmRkMmYwNGJiNGIxZDA3ZWY3MWU3NzQ3NGJfX2pwZWcuaGVpYw==/nickname/5LiJ5Lqa5biC5a6e6aqM5bCP5a2m/userid/NjM3ODcwOTU=/sign/ae9159a9175d4c3ab6a1afd2b5425c69"},{"audio_del":0,"ext":{"unique_id":"908c4b7532d87222ffbb375b86a401d2"},"img_del":0,"img_height":1122,"img_url":"https://ss-mpvolc.meipian.me/users/63787095/a62769a5946a4e0c9f72adc4e877c44c__jpeg.heic","img_width":1496,"location_del":0,"sell_del":0,"source":0,"source_platform":"local","splicing_template_id":0,"text":"通过不同教材版本之间的差异性以及各自特点,设计意图进行横向对比。
","text_del":0,"type":1,"video_del":0,"video_thumbnail_del":0,"vote_del":0,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNjM3ODcwOTUvYTYyNzY5YTU5NDZhNGUwYzlmNzJhZGM0ZTg3N2M0NGNfX2pwZWcuaGVpYw==/nickname/5LiJ5Lqa5biC5a6e6aqM5bCP5a2m/userid/NjM3ODcwOTU=/sign/ae9159a9175d4c3ab6a1afd2b5425c69"},{"audio_del":0,"ext":{"unique_id":"2a97806ac4e03b64fbeb91f8a16df3d8"},"img_del":0,"img_height":1122,"img_url":"https://ss-mpvolc.meipian.me/users/63787095/c530f1525dab4675bc4ca64be2e56a97__jpeg.heic","img_width":1496,"location_del":0,"sell_del":0,"source":0,"source_platform":"local","splicing_template_id":0,"text_del":0,"type":1,"video_del":0,"video_thumbnail_del":0,"vote_del":0,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNjM3ODcwOTUvYzUzMGYxNTI1ZGFiNDY3NWJjNGNhNjRiZTJlNTZhOTdfX2pwZWcuaGVpYw==/nickname/5LiJ5Lqa5biC5a6e6aqM5bCP5a2m/userid/NjM3ODcwOTU=/sign/ae9159a9175d4c3ab6a1afd2b5425c69"},{"audio_del":0,"ext":{"unique_id":"3e6249e6c47f457ec86dcab3adfbaa49"},"img_del":0,"img_height":1122,"img_url":"https://ss-mpvolc.meipian.me/users/63787095/26fb299c1fd14677917b1c971d65e32d__jpeg.heic","img_width":1496,"location_del":0,"sell_del":0,"source":0,"source_platform":"local","splicing_template_id":0,"text_del":0,"type":1,"video_del":0,"video_thumbnail_del":0,"vote_del":0,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNjM3ODcwOTUvMjZmYjI5OWMxZmQxNDY3NzkxN2IxYzk3MWQ2NWUzMmRfX2pwZWcuaGVpYw==/nickname/5LiJ5Lqa5biC5a6e6aqM5bCP5a2m/userid/NjM3ODcwOTU=/sign/ae9159a9175d4c3ab6a1afd2b5425c69"},{"audio_del":0,"ext":{"unique_id":"6e30dcbd08863f5ece24a4f62260f6e4"},"img_del":0,"img_height":1122,"img_url":"https://ss-mpvolc.meipian.me/users/63787095/e4ca1c5741a445af93ad8f729d33904e__jpeg.heic","img_width":1496,"location_del":0,"sell_del":0,"source":0,"source_platform":"local","splicing_template_id":0,"text_del":0,"type":1,"video_del":0,"video_thumbnail_del":0,"vote_del":0,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNjM3ODcwOTUvZTRjYTFjNTc0MWE0NDVhZjkzYWQ4ZjcyOWQzMzkwNGVfX2pwZWcuaGVpYw==/nickname/5LiJ5Lqa5biC5a6e6aqM5bCP5a2m/userid/NjM3ODcwOTU=/sign/ae9159a9175d4c3ab6a1afd2b5425c69"},{"audio_del":0,"ext":{"unique_id":"11d544de7d2ac42a88a90195ba5b29d9"},"img_del":0,"img_height":1122,"img_url":"https://ss-mpvolc.meipian.me/users/63787095/05ae00f98aec4d2ba61ef59e4b8fb80b__jpeg.heic","img_width":1496,"location_del":0,"sell_del":0,"source":0,"source_platform":"local","splicing_template_id":0,"text":"曾老师就如何上好一节公开课提出了自己的看法:
首先:以课本和数学教学用书为辅,认真研读教材。
然后:做好磨课环节,组织同年级老师听课,做好听课记录,特别是要记录好授课老师需要改进的地方,以便授课结束后,一起进行探讨、改进教学思路和方法,重新整理教学流程。
最后:根据改进方案,重新上课展示,通过多次默课,敲定较好的教学方案。
","text_del":0,"type":1,"video_del":0,"video_thumbnail_del":0,"vote_del":0,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNjM3ODcwOTUvMDVhZTAwZjk4YWVjNGQyYmE2MWVmNTllNGI4ZmI4MGJfX2pwZWcuaGVpYw==/nickname/5LiJ5Lqa5biC5a6e6aqM5bCP5a2m/userid/NjM3ODcwOTU=/sign/ae9159a9175d4c3ab6a1afd2b5425c69"},{"audio_del":0,"ext":{"unique_id":"fb0493c641b177da4893a85e13221094"},"img_del":0,"img_height":2000,"img_url":"https://ss-mpvolc.meipian.me/users/63787095/7d3544497d57432f8750e492529d8417__jpeg.heic","img_width":1500,"location_del":0,"sell_del":0,"source":0,"source_platform":"local","splicing_template_id":0,"text":"在评课环节,我校数学组教师充分肯定了杨家鑫老师的教学能力,杨老师温文尔雅的教态,生动有趣的课堂设计让人印象深刻。课堂中,只有将平行四边形“割补”变成长方形,才能方便地计算出包含了几个面积单位。无形中渗透了“转化”的数学思想!为后面动手操作打下了坚实的基础。并在此基础上,初步沟通原来的平行四边形与转化后的长方形的联系,学生自然而然地就把本节课的难点突破了,自此,平行四边形为何要通过“割补”转化的道理,通过学生展示的“数方格”经验的发展与完善,得以深层次地建构。
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在探究过程中需让学生关注以下几点,进而达到深度建构。
①是不是随便剪一刀都能拼成长方形 ?
②剪下后如何变成长方形?
③观察原来的平行四边形和转化后的长方形,让学生发现它们之间有哪些等量关系。
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1.教学要具备教育机智,灵活应对课堂上的各种情况,让课堂上的衔接语更加生动自然,让每一节课流程结构更加清晰。
2.教师要多上公开课,多去锻炼自己,学会抓住课堂上学生的生成,让课堂更加丰富多彩。
3.要向书本学习,向课标学习,也要向专家名师学习。通过观看优秀教师的课例找到适合自己的教学设计,不断探索出属于自己的教学风格。
","text_del":0,"type":1,"video_del":0,"video_thumbnail_del":0,"vote_del":0,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNjM3ODcwOTUvYzNmMjEyZTZjMGFkNDc5ZmEyODVhMzYwOGM2NzI5N2ZfX2pwZWcuaGVpYw==/nickname/5LiJ5Lqa5biC5a6e6aqM5bCP5a2m/userid/NjM3ODcwOTU=/sign/ae9159a9175d4c3ab6a1afd2b5425c69"},{"audio_del":0,"ext":{"unique_id":"6fc9e95495d45fe26f146e4adbc9018c"},"img_del":0,"img_height":800,"img_url":"https://ss-mpvolc.meipian.me/users/63787095/8e860e957d3547a3a8641abb043c593d__jpeg.heic","img_width":800,"location_del":0,"sell_del":0,"source":0,"source_platform":"local","splicing_template_id":0,"text":"相信在蔡山霞老师的带领下,我校数学组教师一定会百尺竿头,更进一步。正如陶行知先生所说的:“处处是创造之地,天天是创造之时,人人是创造之人”的美好理想,通过本次教研活动,进一步加深了我校教师对如果上好一节课的认识、理解,增强了教师的理论水平和教学能力,为今后的教学将起到指导作用。每位教师也有了更明确的方向和目标,心中有目标,脚下方有路!