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【莒南一小】如何教好一节课
","type":1},{"img_height":648,"img_url":"https://ss-mpvolc.meipian.me/users/81122003/00ef7e120b5e4719ae26b24ccaf86138__jpg.heic","img_width":972,"is_origin":false,"source":0,"text":"教好数学课的前提是教对,那么如何教对数学课呢?今晚7:30,如约而至来到“研直播”,继续聆听由俞正强老师带来的“如何教对数学课”
","type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvODExMjIwMDMvMDBlZjdlMTIwYjVlNDcxOWFlMjZiMjRjY2FmODYxMzhfX2pwZy5oZWlj/nickname/5ZOB5ZGz5Lq655Sf/userid/ODExMjIwMDM=/sign/59e477b64469783dbf3ccce887376449"},{"img_height":314,"img_url":"https://ss-mpvolc.meipian.me/users/81122003/e5b78dd807c54bc0ab01bff4e8ae225c__jpg.heic","img_width":550,"is_origin":false,"source":0,"text":"本次讲座俞老师结合具体的课例讲解了一节数学课堂中,学生的“学”发生了什么问题,教师的“教”又发生了什么问题,以及我们应该如何教才能让学生学得更好三方面入手。
","type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvODExMjIwMDMvZTViNzhkZDgwN2M1NGJjMGFiMDFiZmY0ZThhZTIyNWNfX2pwZy5oZWlj/nickname/5ZOB5ZGz5Lq655Sf/userid/ODExMjIwMDM=/sign/59e477b64469783dbf3ccce887376449"},{"img_height":388,"img_url":"https://ss-mpvolc.meipian.me/users/81122003/bb830ecadd4348c39b84d6a7d8a6a12c__jpg.heic","img_width":664,"is_origin":false,"source":0,"text":"一节数学课怎么上都对,可以吗?俞老师以通俗的画人为例:脖子能画到头上吗?很显然这是不可以的。头只能画在脖子上,但是头画的可大可小,可方可圆。这就说明一节数学课怎么上都对是有问题的,有可变的东西,但是框架是不能变的。在小学阶段通常会有三个时期容易犯群体性的毛病。作为老师就要思考:犯错的原因在哪里?三次数学困难高峰的解决策略是什么?这难道是老师的教出现了问题?
俞正强老师以“方程的认识”为例阐述主要观点:学生的学习发生问题很可能是老师的教发生问题了。在学习方程时学生普遍不喜欢用方程来解决问题,遇到被迫必须要用到方程时,有同学会出现算数思维,将算术法转化为方程。 在方程的学习中学生会发生什么问题?不肯用方程来解决问题,列出75-3×6=x这样的方程,不知该设谁为x,为什么在方程的学习中学生会发生这样的问题?或许是教师的教发生了什么问题?
在讲解方程之前,首先来看看等式与算式,等量关系与数量关系的关系。俞老师以两个实际问题的解答为例,使我明白:问题1用“=”表示产生一个新的量(路程),这个式子称为“算式”。问题2中有两个主角在做同一件事情(从甲地到乙地)就会产生等量,就有了等量关系。用“=”表示两个量相等,这样的式子称为“等式”。虽然都用“=”表示,但两个式子的意义是不同的。
","type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvODExMjIwMDMvNTIzNzQwM2VhNDQ2NDBmMWEyZDFkYWNlYzc2YmIyMGNfX2pwZy5oZWlj/nickname/5ZOB5ZGz5Lq655Sf/userid/ODExMjIwMDM=/sign/59e477b64469783dbf3ccce887376449"},{"img_height":320,"img_url":"https://ss-mpvolc.meipian.me/users/81122003/b8522bb4db714d7bb230b1757ffba3c7__jpg.heic","img_width":550,"is_origin":false,"source":0,"text":"在等量—等量关系—等式的过程中,要让学生学会读题。读题不是把题目读一遍,而是让学生在读题的过程中,明白这个问题是发生了一件什么事情,谁干的,怎么干的,结果呢?
","type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvODExMjIwMDMvYjg1MjJiYjRkYjcxNGQ3YmIyMzBiMTc1N2ZmYmEzYzdfX2pwZy5oZWlj/nickname/5ZOB5ZGz5Lq655Sf/userid/ODExMjIwMDM=/sign/59e477b64469783dbf3ccce887376449"},{"img_height":356,"img_url":"https://ss-mpvolc.meipian.me/users/81122003/451b319f780b033cda2174f801e25d68__jpg.heic","img_width":620,"is_origin":false,"source":0,"type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvODExMjIwMDMvNDUxYjMxOWY3ODBiMDMzY2RhMjE3NGY4MDFlMjVkNjhfX2pwZy5oZWlj/nickname/5ZOB5ZGz5Lq655Sf/userid/ODExMjIwMDM=/sign/59e477b64469783dbf3ccce887376449"},{"img_height":310,"img_url":"https://ss-mpvolc.meipian.me/users/81122003/9dd233c603ec453a8d9076c2f07598e5__jpg.heic","img_width":552,"is_origin":false,"source":0,"text":"在学习方程时学生普遍不喜欢用方程来解决问题,那在备课过程中教师有没有思考过等式和算式、等量关系和数量关系的区别呢?教师忽略了学生学习的困惑,备课时只注重“形”,没抓住“质”教学就出问题了,只有改善教师的教学才能改善孩子的学习。
","type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvODExMjIwMDMvOWRkMjMzYzYwM2VjNDUzYThkOTA3NmMyZjA3NTk4ZTVfX2pwZy5oZWlj/nickname/5ZOB5ZGz5Lq655Sf/userid/ODExMjIwMDM=/sign/59e477b64469783dbf3ccce887376449"},{"img_height":318,"img_url":"https://ss-mpvolc.meipian.me/users/81122003/15e68aae70324480be0bfb47dbbbddab__jpg.heic","img_width":552,"is_origin":false,"source":0,"type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvODExMjIwMDMvMTVlNjhhYWU3MDMyNDQ4MGJlMGJmYjQ3ZGJiYmRkYWJfX2pwZy5oZWlj/nickname/5ZOB5ZGz5Lq655Sf/userid/ODExMjIwMDM=/sign/59e477b64469783dbf3ccce887376449"},{"source":0,"text":"听了俞正强老师的直播讲座,让我受益匪浅。也让我明白了对如何上好数学课,如何上对数学课的一些困惑,明确了研究的方向。疫情阻挡不了教研的热情,我们只有在不断学习与交流中,才能探寻出适合自己的,适应学生的教学方式。路漫漫其修远兮,吾将上下而求索!
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","type":1},{"img_height":648,"img_url":"https://ss-mpvolc.meipian.me/users/81122003/00ef7e120b5e4719ae26b24ccaf86138__jpg.heic","img_width":972,"is_origin":false,"source":0,"text":"教好数学课的前提是教对,那么如何教对数学课呢?今晚7:30,如约而至来到“研直播”,继续聆听由俞正强老师带来的“如何教对数学课”
","type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvODExMjIwMDMvMDBlZjdlMTIwYjVlNDcxOWFlMjZiMjRjY2FmODYxMzhfX2pwZy5oZWlj/nickname/5ZOB5ZGz5Lq655Sf/userid/ODExMjIwMDM=/sign/59e477b64469783dbf3ccce887376449"},{"img_height":314,"img_url":"https://ss-mpvolc.meipian.me/users/81122003/e5b78dd807c54bc0ab01bff4e8ae225c__jpg.heic","img_width":550,"is_origin":false,"source":0,"text":"本次讲座俞老师结合具体的课例讲解了一节数学课堂中,学生的“学”发生了什么问题,教师的“教”又发生了什么问题,以及我们应该如何教才能让学生学得更好三方面入手。
","type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvODExMjIwMDMvZTViNzhkZDgwN2M1NGJjMGFiMDFiZmY0ZThhZTIyNWNfX2pwZy5oZWlj/nickname/5ZOB5ZGz5Lq655Sf/userid/ODExMjIwMDM=/sign/59e477b64469783dbf3ccce887376449"},{"img_height":388,"img_url":"https://ss-mpvolc.meipian.me/users/81122003/bb830ecadd4348c39b84d6a7d8a6a12c__jpg.heic","img_width":664,"is_origin":false,"source":0,"text":"一节数学课怎么上都对,可以吗?俞老师以通俗的画人为例:脖子能画到头上吗?很显然这是不可以的。头只能画在脖子上,但是头画的可大可小,可方可圆。这就说明一节数学课怎么上都对是有问题的,有可变的东西,但是框架是不能变的。在小学阶段通常会有三个时期容易犯群体性的毛病。作为老师就要思考:犯错的原因在哪里?三次数学困难高峰的解决策略是什么?这难道是老师的教出现了问题?
俞正强老师以“方程的认识”为例阐述主要观点:学生的学习发生问题很可能是老师的教发生问题了。在学习方程时学生普遍不喜欢用方程来解决问题,遇到被迫必须要用到方程时,有同学会出现算数思维,将算术法转化为方程。 在方程的学习中学生会发生什么问题?不肯用方程来解决问题,列出75-3×6=x这样的方程,不知该设谁为x,为什么在方程的学习中学生会发生这样的问题?或许是教师的教发生了什么问题?
在讲解方程之前,首先来看看等式与算式,等量关系与数量关系的关系。俞老师以两个实际问题的解答为例,使我明白:问题1用“=”表示产生一个新的量(路程),这个式子称为“算式”。问题2中有两个主角在做同一件事情(从甲地到乙地)就会产生等量,就有了等量关系。用“=”表示两个量相等,这样的式子称为“等式”。虽然都用“=”表示,但两个式子的意义是不同的。
","type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvODExMjIwMDMvNTIzNzQwM2VhNDQ2NDBmMWEyZDFkYWNlYzc2YmIyMGNfX2pwZy5oZWlj/nickname/5ZOB5ZGz5Lq655Sf/userid/ODExMjIwMDM=/sign/59e477b64469783dbf3ccce887376449"},{"img_height":320,"img_url":"https://ss-mpvolc.meipian.me/users/81122003/b8522bb4db714d7bb230b1757ffba3c7__jpg.heic","img_width":550,"is_origin":false,"source":0,"text":"在等量—等量关系—等式的过程中,要让学生学会读题。读题不是把题目读一遍,而是让学生在读题的过程中,明白这个问题是发生了一件什么事情,谁干的,怎么干的,结果呢?
","type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvODExMjIwMDMvYjg1MjJiYjRkYjcxNGQ3YmIyMzBiMTc1N2ZmYmEzYzdfX2pwZy5oZWlj/nickname/5ZOB5ZGz5Lq655Sf/userid/ODExMjIwMDM=/sign/59e477b64469783dbf3ccce887376449"},{"img_height":356,"img_url":"https://ss-mpvolc.meipian.me/users/81122003/451b319f780b033cda2174f801e25d68__jpg.heic","img_width":620,"is_origin":false,"source":0,"type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvODExMjIwMDMvNDUxYjMxOWY3ODBiMDMzY2RhMjE3NGY4MDFlMjVkNjhfX2pwZy5oZWlj/nickname/5ZOB5ZGz5Lq655Sf/userid/ODExMjIwMDM=/sign/59e477b64469783dbf3ccce887376449"},{"img_height":310,"img_url":"https://ss-mpvolc.meipian.me/users/81122003/9dd233c603ec453a8d9076c2f07598e5__jpg.heic","img_width":552,"is_origin":false,"source":0,"text":"在学习方程时学生普遍不喜欢用方程来解决问题,那在备课过程中教师有没有思考过等式和算式、等量关系和数量关系的区别呢?教师忽略了学生学习的困惑,备课时只注重“形”,没抓住“质”教学就出问题了,只有改善教师的教学才能改善孩子的学习。
","type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvODExMjIwMDMvOWRkMjMzYzYwM2VjNDUzYThkOTA3NmMyZjA3NTk4ZTVfX2pwZy5oZWlj/nickname/5ZOB5ZGz5Lq655Sf/userid/ODExMjIwMDM=/sign/59e477b64469783dbf3ccce887376449"},{"img_height":318,"img_url":"https://ss-mpvolc.meipian.me/users/81122003/15e68aae70324480be0bfb47dbbbddab__jpg.heic","img_width":552,"is_origin":false,"source":0,"type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvODExMjIwMDMvMTVlNjhhYWU3MDMyNDQ4MGJlMGJmYjQ3ZGJiYmRkYWJfX2pwZy5oZWlj/nickname/5ZOB5ZGz5Lq655Sf/userid/ODExMjIwMDM=/sign/59e477b64469783dbf3ccce887376449"},{"source":0,"text":"听了俞正强老师的直播讲座,让我受益匪浅。也让我明白了对如何上好数学课,如何上对数学课的一些困惑,明确了研究的方向。疫情阻挡不了教研的热情,我们只有在不断学习与交流中,才能探寻出适合自己的,适应学生的教学方式。路漫漫其修远兮,吾将上下而求索!
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