工作就用美篇工作版","guide_search_desc":"海量模板范文,一键做同款 工作就用美篇工作版","img_beautify_switch":0,"ad_free":0,"text_direction":1,"template":{"id":9901,"series_id":18,"theme_id":18},"container":{},"redirect":{"redirect_type":1,"img_url":false,"link_url":"/wap/downloadpage/backpage","button_bg_color":false,"button_desc":false,"redirect_desc":false},"edit_date_str":"发布于 2021-10-17","current_time":1743865086,"font_name":"FZWBJW","rcmd_meipian":0,"hide_article_link":0,"from_wechat":false,"topk_keywords":[{"name":"学生","score":0.361166},{"name":"老师","score":0.110473},{"name":"课堂","score":0.108124},{"name":"图形","score":0.095781},{"name":"小数","score":0.094855},{"name":"本节","score":0.073402},{"name":"小杯","score":0.073042},{"name":"策略","score":0.069701},{"name":"学习","score":0.069325},{"name":"教学","score":0.069103}],"music_name":"","origin_status":0,"password_v2":"","font_id":5,"title_style":"","rich_text_title":"","enable_download":1,"cover_thumb":"https://ss-mpvolc.meipian.me/users/42564298/e6b7439e89b30ca6fc06822ea35b781b__jpg.heic","has_video":false,"gift_switch":1,"enable_watermark":1,"content":{"article_id":301421201,"content":[{"audio_music_id":0,"img_height":210,"img_size":32,"img_url":"https://ss-mpvolc.meipian.me/users/42564298/e6b7439e89b30ca6fc06822ea35b781b__jpg.heic","img_width":314,"is_origin":false,"source":0,"type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNDI1NjQyOTgvZTZiNzQzOWU4OWIzMGNhNmZjMDY4MjJlYTM1Yjc4MWJfX2pwZy5oZWlj/nickname/546L5rC46Zye/userid/NDI1NjQyOTg=/sign/20e649b2d26b256af9ee7208e24ce0fd"},{"audio_music_id":0,"source":0,"text":"
10月16日我有幸来到大美临沂参加了和美课堂的学习活动,学习过程是紧张而愉快的。我作为一名普通的教师能够参加这次大规模、高质量的培训,我首先感谢学校领导给我提供了这次学习的机会。
","type":1},{"audio_music_id":0,"img_height":810,"img_url":"https://ss-mpvolc.meipian.me/users/42564298/1634460977964__jpg.heic","img_width":1080,"is_origin":false,"source":1,"splicing_template_id":208,"type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNDI1NjQyOTgvMTYzNDQ2MDk3Nzk2NF9fanBnLmhlaWM=/nickname/546L5rC46Zye/userid/NDI1NjQyOTg=/sign/20e649b2d26b256af9ee7208e24ce0fd"},{"audio_music_id":0,"source":0,"text":"首先是贲友林老师的《小数的意义》
","type":1},{"audio_music_id":0,"img_height":1080,"img_url":"https://ss-mpvolc.meipian.me/users/42564298/1634461116128__jpg.heic","img_width":1080,"is_origin":false,"source":1,"splicing_template_id":306,"type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNDI1NjQyOTgvMTYzNDQ2MTExNjEyOF9fanBnLmhlaWM=/nickname/546L5rC46Zye/userid/NDI1NjQyOTg=/sign/20e649b2d26b256af9ee7208e24ce0fd"},{"audio_music_id":0,"source":0,"text":"本节教学内容是在三年级“分数的初步认识”和“小数的初步认识”的基础上进行教学的,是学生系统学习小数的开始。小数实质上是十进分数的另一种表示形式,其依据是十进制位值原则。教材着重从“小数是十进分数的另一种表示形式”来说明小数的意义,使学生明确“分母是10、100、1000……的分数可以用小数来表示。”
贲老师整节课设计的非常流畅,一节一节,紧紧围绕小数和分数的关系展开,给人以水到渠成之感,便于学生理解。贲老师的语言生动有趣,真的是富有启发性,发问具有针对性,整节课环环相扣,处理完一小节进行一总结,学生没有问题后接着再引出下一个小问题,使得课堂扎实而饱满。
在本节课中,贲老师收放有度,真正把课堂还给了学生,小组讨论交流、学生发问,学生答疑,课堂气氛十分活跃。
","type":1},{"audio_music_id":0,"img_height":1080,"img_url":"https://ss-mpvolc.meipian.me/users/42564298/1634461913836__jpg.heic","img_width":1080,"is_origin":false,"source":1,"splicing_template_id":903,"type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNDI1NjQyOTgvMTYzNDQ2MTkxMzgzNl9fanBnLmhlaWM=/nickname/546L5rC46Zye/userid/NDI1NjQyOTg=/sign/20e649b2d26b256af9ee7208e24ce0fd"},{"audio_music_id":0,"img_height":1080,"img_url":"https://ss-mpvolc.meipian.me/users/42564298/1634461607731__jpg.heic","img_width":1080,"is_origin":false,"source":1,"splicing_template_id":303,"type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNDI1NjQyOTgvMTYzNDQ2MTYwNzczMV9fanBnLmhlaWM=/nickname/546L5rC46Zye/userid/NDI1NjQyOTg=/sign/20e649b2d26b256af9ee7208e24ce0fd"},{"audio_music_id":0,"source":0,"text":"接下来是储冬生老师的《解决问题的策略》
","type":1},{"audio_music_id":0,"img_height":1440,"img_url":"https://ss-mpvolc.meipian.me/users/42564298/1634461785213__jpg.heic","img_width":1080,"is_origin":false,"source":1,"splicing_template_id":201,"type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNDI1NjQyOTgvMTYzNDQ2MTc4NTIxM19fanBnLmhlaWM=/nickname/546L5rC46Zye/userid/NDI1NjQyOTg=/sign/20e649b2d26b256af9ee7208e24ce0fd"},{"audio_music_id":0,"source":0,"text":"本节课储老师用了这两个简单的问题引入新课。
1.小明把20毫升果汁倒入9个小杯,正好倒满,小杯的容量是多少毫升?
2.小明把720毫升果汁倒入3个大杯,正好倒满,大杯的容量是多少毫升?
接着老师把条件变换,再让学生自己尝试解决问题。
小明把720毫升果汁倒入6个小杯和1个大杯,正好都倒满,小杯的容量是大杯的三分之一。大杯和小杯 的容量各是多少?
储老师以学生独立思考和小组交流为教学形式进行思考,学生展示了三种方法:一是假设都是小瓶,一个大瓶相当于3个小瓶然后求解;二是假设都是大瓶6个小瓶相当于2个大瓶然后求解;三是解设大瓶的容量是x借助方程解决问题。
随后储老师指出上一节聚焦策略的课。首先从策略的内涵看,假设策略的教学没有停留在策略层面,向下有画图等方法的支撑,向上有转化等思想的滋养。有方法的支撑策略才能走向操作,有思想的滋养策略才能走向融通。本节课教学中,我们努力从解决问题出发,重点关注,重视解决问题之后的反思,总结与提升,让学生在方法策略和思想之间往返,实现螺旋上升,从而提高认识,真正掌握策略,实现可迁移的学力提升。
","type":1},{"audio_music_id":0,"img_height":1080,"img_url":"https://ss-mpvolc.meipian.me/users/42564298/1634462794253__jpg.heic","img_width":1080,"is_origin":false,"source":1,"splicing_template_id":303,"type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNDI1NjQyOTgvMTYzNDQ2Mjc5NDI1M19fanBnLmhlaWM=/nickname/546L5rC46Zye/userid/NDI1NjQyOTg=/sign/20e649b2d26b256af9ee7208e24ce0fd"},{"audio_music_id":0,"source":0,"text":"第三场是刘延革老师的《数与形》
","type":1},{"audio_music_id":0,"img_height":2000,"img_size":315,"img_url":"https://ss-mpvolc.meipian.me/users/42564298/38838ee17463020500b5c4a8744e8f53__jpg.heic","img_width":2000,"is_origin":false,"source":0,"type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNDI1NjQyOTgvMzg4MzhlZTE3NDYzMDIwNTAwYjVjNGE4NzQ0ZThmNTNfX2pwZy5oZWlj/nickname/546L5rC46Zye/userid/NDI1NjQyOTg=/sign/20e649b2d26b256af9ee7208e24ce0fd"},{"audio_music_id":0,"source":0,"text":"数形结合”是六年级上册教材中新编的内容,数与形是数学中的两个最古老,也是最基本的研究对象,数形结合可以让数量关系与图形的性质的问题很好地转化,通过几何直观可以帮助学生建立数的概念,帮助学生理解数运算的意义,可以使思路与过程具体化。
《数与形》这一内容是让学生经历观察、操作、归纳等活动,帮助学生借助“形”来直观感受与“数”之间的关系,体会有时“形”与“数”能互相解释,并能借助 “形”解决一些与“数”有关的问题。郎老师为了让学生理解图形和数字的对应关系,发现相应的数字变化规律,在课堂中做到了以下几点:
一是引导学生数形结合,从不同角度寻找规律。例如,在教学例1之前,刘老师首先用一组图形 ……让学生去发现图形排列的规律,让学生从形引入,猜下一个图形是什么图形。学生从图形中想到数,单数是 ,双数 ,从形到数,教师为学生提供了一个熟悉的、生动形象的情境,让学生通过想象进入了新知的学习。接着在教学例1时,先让学生说一说三幅图中分别有多少个小正方形?你是怎么发现的?通过学生的讨论,学生容易得出小正方形数为1,4,9,…的结论;还有的学生看到三个图中的小正方形数还可以分别表示成1,1+3,1+3+5,…的结论。这时教师引导学生从数引入,让学生通过计算,发现1+3=4,1+3+5=9,…这时老师引导学生用正方形来表示这些算式,使学生通过数与形的比照,看到这些连续的奇数在图形中的什么地方,平方数代表的又是图形中的什么,学生对规律形成更为直观的认识,从而突出了本课重点及难点。
二是改变学生的学习方法,促进自主探究和合作交流。在课堂学习中,刘老师不论是“以数解形”、还是“以形助数”,在难点、重点之处都是能较好地引导学生自主探究和进行合作交流,学生在小组合作交流中,把复杂的问题简单化,抽象问题具体化。教师在课堂中相信学生,不以“知识权威”自居,能与学生在同一平台上互动探究,让数学课堂再现学生与教师、学生与学生之间思维的交流与碰撞。
三是教师能较地好地把握教材,培养学生的基本数学思想。“数与形”这一内容,刘老师通过数与形结合来帮助学生学会分析思考问题,更让学生领悟了基本的数学思想——极限思想。为了达到这一目标,刘老师在例2教学中,让学生通过计算,发现和越来越趋向于1,感受什么叫“无限接近”。 同时又出示一个圆正方形及一条线段,让学生根据分数的意义表示出这些加数,使学生直观地看到最终的结果是“1”。从而进一步感受到“化数为形”的直观、形象、简捷特点。虽然无法一一穷举所得的结果,但可以利用观察到的规律进行“无穷无尽”类推,使学生在这一过程中体会推理和极限的思想。
","type":1},{"audio_music_id":0,"img_height":1440,"img_url":"https://ss-mpvolc.meipian.me/users/42564298/1634463580902__jpg.heic","img_width":1080,"is_origin":false,"source":1,"splicing_template_id":901,"type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNDI1NjQyOTgvMTYzNDQ2MzU4MDkwMl9fanBnLmhlaWM=/nickname/546L5rC46Zye/userid/NDI1NjQyOTg=/sign/20e649b2d26b256af9ee7208e24ce0fd"},{"audio_music_id":0,"img_height":608,"img_url":"https://ss-mpvolc.meipian.me/users/42564298/1634463617355__jpg.heic","img_width":1080,"is_origin":false,"source":1,"splicing_template_id":608,"type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNDI1NjQyOTgvMTYzNDQ2MzYxNzM1NV9fanBnLmhlaWM=/nickname/546L5rC46Zye/userid/NDI1NjQyOTg=/sign/20e649b2d26b256af9ee7208e24ce0fd"},{"audio_music_id":0,"img_height":1334,"img_size":409,"img_url":"https://ss-mpvolc.meipian.me/users/42564298/161a717c74d163fde2b8eb056e1584e0__jpg.heic","img_width":2000,"is_origin":false,"source":0,"type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNDI1NjQyOTgvMTYxYTcxN2M3NGQxNjNmZGUyYjhlYjA1NmUxNTg0ZTBfX2pwZy5oZWlj/nickname/546L5rC46Zye/userid/NDI1NjQyOTg=/sign/20e649b2d26b256af9ee7208e24ce0fd"},{"audio_music_id":0,"source":0,"text":"最后是张齐华老师的《植树问题》
","type":1},{"audio_music_id":0,"img_height":3000,"img_size":501,"img_url":"https://ss-mpvolc.meipian.me/users/42564298/f92d9737ada5f561b6c4aaad28e1194f__jpg.heic","img_width":2000,"is_origin":false,"source":0,"type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNDI1NjQyOTgvZjkyZDk3MzdhZGE1ZjU2MWI2YzRhYWFkMjhlMTE5NGZfX2pwZy5oZWlj/nickname/546L5rC46Zye/userid/NDI1NjQyOTg=/sign/20e649b2d26b256af9ee7208e24ce0fd"},{"audio_music_id":0,"img_height":3000,"img_size":487,"img_url":"https://ss-mpvolc.meipian.me/users/42564298/109c6efdac0fb92b1bf431ea5321ebdb__jpg.heic","img_width":2000,"is_origin":false,"source":0,"type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNDI1NjQyOTgvMTA5YzZlZmRhYzBmYjkyYjFiZjQzMWVhNTMyMWViZGJfX2pwZy5oZWlj/nickname/546L5rC46Zye/userid/NDI1NjQyOTg=/sign/20e649b2d26b256af9ee7208e24ce0fd"},{"audio_music_id":0,"img_height":3000,"img_size":448,"img_url":"https://ss-mpvolc.meipian.me/users/42564298/b353f8cdd850cf7d235eaa7d305d097b__jpg.heic","img_width":2000,"is_origin":false,"source":0,"type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNDI1NjQyOTgvYjM1M2Y4Y2RkODUwY2Y3ZDIzNWVhYTdkMzA1ZDA5N2JfX2pwZy5oZWlj/nickname/546L5rC46Zye/userid/NDI1NjQyOTg=/sign/20e649b2d26b256af9ee7208e24ce0fd"},{"audio_music_id":0,"source":0,"text":"本节课张老师采用“解读任务—组内共学—质疑深化—评价反思”的模式,彻底将课堂放手给孩子,孩子们各抒己见,展开了有层次、有深度、有效率的交流和对话!在生生答疑过程中,张老师通过适度追问,将本节课的核心内容进行梳理,以使学生的思维更深入更准确更完善!
","type":1},{"audio_music_id":0,"img_height":810,"img_url":"https://ss-mpvolc.meipian.me/users/42564298/1634464399640__jpg.heic","img_width":1080,"is_origin":false,"source":1,"splicing_template_id":208,"type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNDI1NjQyOTgvMTYzNDQ2NDM5OTY0MF9fanBnLmhlaWM=/nickname/546L5rC46Zye/userid/NDI1NjQyOTg=/sign/20e649b2d26b256af9ee7208e24ce0fd"},{"audio_music_id":0,"source":0,"text":"本次学习是一次视觉和听觉的盛宴,使我开阔了视野,增长了见识,积累了经验,丰富了阅历,学有所成,学有所获,也是自己的又一次成长,同时也感到自己的不足和肩负的责任重大。今后将更加努力,加强自我发展、自我教育,以积极的姿态,敬业的精神挑战自我!
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","type":1},{"audio_music_id":0,"img_height":810,"img_url":"https://ss-mpvolc.meipian.me/users/42564298/1634460977964__jpg.heic","img_width":1080,"is_origin":false,"source":1,"splicing_template_id":208,"type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNDI1NjQyOTgvMTYzNDQ2MDk3Nzk2NF9fanBnLmhlaWM=/nickname/546L5rC46Zye/userid/NDI1NjQyOTg=/sign/20e649b2d26b256af9ee7208e24ce0fd"},{"audio_music_id":0,"source":0,"text":"首先是贲友林老师的《小数的意义》
","type":1},{"audio_music_id":0,"img_height":1080,"img_url":"https://ss-mpvolc.meipian.me/users/42564298/1634461116128__jpg.heic","img_width":1080,"is_origin":false,"source":1,"splicing_template_id":306,"type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNDI1NjQyOTgvMTYzNDQ2MTExNjEyOF9fanBnLmhlaWM=/nickname/546L5rC46Zye/userid/NDI1NjQyOTg=/sign/20e649b2d26b256af9ee7208e24ce0fd"},{"audio_music_id":0,"source":0,"text":"本节教学内容是在三年级“分数的初步认识”和“小数的初步认识”的基础上进行教学的,是学生系统学习小数的开始。小数实质上是十进分数的另一种表示形式,其依据是十进制位值原则。教材着重从“小数是十进分数的另一种表示形式”来说明小数的意义,使学生明确“分母是10、100、1000……的分数可以用小数来表示。”
贲老师整节课设计的非常流畅,一节一节,紧紧围绕小数和分数的关系展开,给人以水到渠成之感,便于学生理解。贲老师的语言生动有趣,真的是富有启发性,发问具有针对性,整节课环环相扣,处理完一小节进行一总结,学生没有问题后接着再引出下一个小问题,使得课堂扎实而饱满。
在本节课中,贲老师收放有度,真正把课堂还给了学生,小组讨论交流、学生发问,学生答疑,课堂气氛十分活跃。
","type":1},{"audio_music_id":0,"img_height":1080,"img_url":"https://ss-mpvolc.meipian.me/users/42564298/1634461913836__jpg.heic","img_width":1080,"is_origin":false,"source":1,"splicing_template_id":903,"type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNDI1NjQyOTgvMTYzNDQ2MTkxMzgzNl9fanBnLmhlaWM=/nickname/546L5rC46Zye/userid/NDI1NjQyOTg=/sign/20e649b2d26b256af9ee7208e24ce0fd"},{"audio_music_id":0,"img_height":1080,"img_url":"https://ss-mpvolc.meipian.me/users/42564298/1634461607731__jpg.heic","img_width":1080,"is_origin":false,"source":1,"splicing_template_id":303,"type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNDI1NjQyOTgvMTYzNDQ2MTYwNzczMV9fanBnLmhlaWM=/nickname/546L5rC46Zye/userid/NDI1NjQyOTg=/sign/20e649b2d26b256af9ee7208e24ce0fd"},{"audio_music_id":0,"source":0,"text":"接下来是储冬生老师的《解决问题的策略》
","type":1},{"audio_music_id":0,"img_height":1440,"img_url":"https://ss-mpvolc.meipian.me/users/42564298/1634461785213__jpg.heic","img_width":1080,"is_origin":false,"source":1,"splicing_template_id":201,"type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNDI1NjQyOTgvMTYzNDQ2MTc4NTIxM19fanBnLmhlaWM=/nickname/546L5rC46Zye/userid/NDI1NjQyOTg=/sign/20e649b2d26b256af9ee7208e24ce0fd"},{"audio_music_id":0,"source":0,"text":"本节课储老师用了这两个简单的问题引入新课。
1.小明把20毫升果汁倒入9个小杯,正好倒满,小杯的容量是多少毫升?
2.小明把720毫升果汁倒入3个大杯,正好倒满,大杯的容量是多少毫升?
接着老师把条件变换,再让学生自己尝试解决问题。
小明把720毫升果汁倒入6个小杯和1个大杯,正好都倒满,小杯的容量是大杯的三分之一。大杯和小杯 的容量各是多少?
储老师以学生独立思考和小组交流为教学形式进行思考,学生展示了三种方法:一是假设都是小瓶,一个大瓶相当于3个小瓶然后求解;二是假设都是大瓶6个小瓶相当于2个大瓶然后求解;三是解设大瓶的容量是x借助方程解决问题。
随后储老师指出上一节聚焦策略的课。首先从策略的内涵看,假设策略的教学没有停留在策略层面,向下有画图等方法的支撑,向上有转化等思想的滋养。有方法的支撑策略才能走向操作,有思想的滋养策略才能走向融通。本节课教学中,我们努力从解决问题出发,重点关注,重视解决问题之后的反思,总结与提升,让学生在方法策略和思想之间往返,实现螺旋上升,从而提高认识,真正掌握策略,实现可迁移的学力提升。
","type":1},{"audio_music_id":0,"img_height":1080,"img_url":"https://ss-mpvolc.meipian.me/users/42564298/1634462794253__jpg.heic","img_width":1080,"is_origin":false,"source":1,"splicing_template_id":303,"type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNDI1NjQyOTgvMTYzNDQ2Mjc5NDI1M19fanBnLmhlaWM=/nickname/546L5rC46Zye/userid/NDI1NjQyOTg=/sign/20e649b2d26b256af9ee7208e24ce0fd"},{"audio_music_id":0,"source":0,"text":"第三场是刘延革老师的《数与形》
","type":1},{"audio_music_id":0,"img_height":2000,"img_size":315,"img_url":"https://ss-mpvolc.meipian.me/users/42564298/38838ee17463020500b5c4a8744e8f53__jpg.heic","img_width":2000,"is_origin":false,"source":0,"type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNDI1NjQyOTgvMzg4MzhlZTE3NDYzMDIwNTAwYjVjNGE4NzQ0ZThmNTNfX2pwZy5oZWlj/nickname/546L5rC46Zye/userid/NDI1NjQyOTg=/sign/20e649b2d26b256af9ee7208e24ce0fd"},{"audio_music_id":0,"source":0,"text":"数形结合”是六年级上册教材中新编的内容,数与形是数学中的两个最古老,也是最基本的研究对象,数形结合可以让数量关系与图形的性质的问题很好地转化,通过几何直观可以帮助学生建立数的概念,帮助学生理解数运算的意义,可以使思路与过程具体化。
《数与形》这一内容是让学生经历观察、操作、归纳等活动,帮助学生借助“形”来直观感受与“数”之间的关系,体会有时“形”与“数”能互相解释,并能借助 “形”解决一些与“数”有关的问题。郎老师为了让学生理解图形和数字的对应关系,发现相应的数字变化规律,在课堂中做到了以下几点:
一是引导学生数形结合,从不同角度寻找规律。例如,在教学例1之前,刘老师首先用一组图形 ……让学生去发现图形排列的规律,让学生从形引入,猜下一个图形是什么图形。学生从图形中想到数,单数是 ,双数 ,从形到数,教师为学生提供了一个熟悉的、生动形象的情境,让学生通过想象进入了新知的学习。接着在教学例1时,先让学生说一说三幅图中分别有多少个小正方形?你是怎么发现的?通过学生的讨论,学生容易得出小正方形数为1,4,9,…的结论;还有的学生看到三个图中的小正方形数还可以分别表示成1,1+3,1+3+5,…的结论。这时教师引导学生从数引入,让学生通过计算,发现1+3=4,1+3+5=9,…这时老师引导学生用正方形来表示这些算式,使学生通过数与形的比照,看到这些连续的奇数在图形中的什么地方,平方数代表的又是图形中的什么,学生对规律形成更为直观的认识,从而突出了本课重点及难点。
二是改变学生的学习方法,促进自主探究和合作交流。在课堂学习中,刘老师不论是“以数解形”、还是“以形助数”,在难点、重点之处都是能较好地引导学生自主探究和进行合作交流,学生在小组合作交流中,把复杂的问题简单化,抽象问题具体化。教师在课堂中相信学生,不以“知识权威”自居,能与学生在同一平台上互动探究,让数学课堂再现学生与教师、学生与学生之间思维的交流与碰撞。
三是教师能较地好地把握教材,培养学生的基本数学思想。“数与形”这一内容,刘老师通过数与形结合来帮助学生学会分析思考问题,更让学生领悟了基本的数学思想——极限思想。为了达到这一目标,刘老师在例2教学中,让学生通过计算,发现和越来越趋向于1,感受什么叫“无限接近”。 同时又出示一个圆正方形及一条线段,让学生根据分数的意义表示出这些加数,使学生直观地看到最终的结果是“1”。从而进一步感受到“化数为形”的直观、形象、简捷特点。虽然无法一一穷举所得的结果,但可以利用观察到的规律进行“无穷无尽”类推,使学生在这一过程中体会推理和极限的思想。
","type":1},{"audio_music_id":0,"img_height":1440,"img_url":"https://ss-mpvolc.meipian.me/users/42564298/1634463580902__jpg.heic","img_width":1080,"is_origin":false,"source":1,"splicing_template_id":901,"type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNDI1NjQyOTgvMTYzNDQ2MzU4MDkwMl9fanBnLmhlaWM=/nickname/546L5rC46Zye/userid/NDI1NjQyOTg=/sign/20e649b2d26b256af9ee7208e24ce0fd"},{"audio_music_id":0,"img_height":608,"img_url":"https://ss-mpvolc.meipian.me/users/42564298/1634463617355__jpg.heic","img_width":1080,"is_origin":false,"source":1,"splicing_template_id":608,"type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNDI1NjQyOTgvMTYzNDQ2MzYxNzM1NV9fanBnLmhlaWM=/nickname/546L5rC46Zye/userid/NDI1NjQyOTg=/sign/20e649b2d26b256af9ee7208e24ce0fd"},{"audio_music_id":0,"img_height":1334,"img_size":409,"img_url":"https://ss-mpvolc.meipian.me/users/42564298/161a717c74d163fde2b8eb056e1584e0__jpg.heic","img_width":2000,"is_origin":false,"source":0,"type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNDI1NjQyOTgvMTYxYTcxN2M3NGQxNjNmZGUyYjhlYjA1NmUxNTg0ZTBfX2pwZy5oZWlj/nickname/546L5rC46Zye/userid/NDI1NjQyOTg=/sign/20e649b2d26b256af9ee7208e24ce0fd"},{"audio_music_id":0,"source":0,"text":"最后是张齐华老师的《植树问题》
","type":1},{"audio_music_id":0,"img_height":3000,"img_size":501,"img_url":"https://ss-mpvolc.meipian.me/users/42564298/f92d9737ada5f561b6c4aaad28e1194f__jpg.heic","img_width":2000,"is_origin":false,"source":0,"type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNDI1NjQyOTgvZjkyZDk3MzdhZGE1ZjU2MWI2YzRhYWFkMjhlMTE5NGZfX2pwZy5oZWlj/nickname/546L5rC46Zye/userid/NDI1NjQyOTg=/sign/20e649b2d26b256af9ee7208e24ce0fd"},{"audio_music_id":0,"img_height":3000,"img_size":487,"img_url":"https://ss-mpvolc.meipian.me/users/42564298/109c6efdac0fb92b1bf431ea5321ebdb__jpg.heic","img_width":2000,"is_origin":false,"source":0,"type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNDI1NjQyOTgvMTA5YzZlZmRhYzBmYjkyYjFiZjQzMWVhNTMyMWViZGJfX2pwZy5oZWlj/nickname/546L5rC46Zye/userid/NDI1NjQyOTg=/sign/20e649b2d26b256af9ee7208e24ce0fd"},{"audio_music_id":0,"img_height":3000,"img_size":448,"img_url":"https://ss-mpvolc.meipian.me/users/42564298/b353f8cdd850cf7d235eaa7d305d097b__jpg.heic","img_width":2000,"is_origin":false,"source":0,"type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNDI1NjQyOTgvYjM1M2Y4Y2RkODUwY2Y3ZDIzNWVhYTdkMzA1ZDA5N2JfX2pwZy5oZWlj/nickname/546L5rC46Zye/userid/NDI1NjQyOTg=/sign/20e649b2d26b256af9ee7208e24ce0fd"},{"audio_music_id":0,"source":0,"text":"本节课张老师采用“解读任务—组内共学—质疑深化—评价反思”的模式,彻底将课堂放手给孩子,孩子们各抒己见,展开了有层次、有深度、有效率的交流和对话!在生生答疑过程中,张老师通过适度追问,将本节课的核心内容进行梳理,以使学生的思维更深入更准确更完善!
","type":1},{"audio_music_id":0,"img_height":810,"img_url":"https://ss-mpvolc.meipian.me/users/42564298/1634464399640__jpg.heic","img_width":1080,"is_origin":false,"source":1,"splicing_template_id":208,"type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNDI1NjQyOTgvMTYzNDQ2NDM5OTY0MF9fanBnLmhlaWM=/nickname/546L5rC46Zye/userid/NDI1NjQyOTg=/sign/20e649b2d26b256af9ee7208e24ce0fd"},{"audio_music_id":0,"source":0,"text":"本次学习是一次视觉和听觉的盛宴,使我开阔了视野,增长了见识,积累了经验,丰富了阅历,学有所成,学有所获,也是自己的又一次成长,同时也感到自己的不足和肩负的责任重大。今后将更加努力,加强自我发展、自我教育,以积极的姿态,敬业的精神挑战自我!
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