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为充分发挥罗定市小学名教师工作室的示范引领和带动作用,积极推动罗定市创建课堂教学改革工作的开展,在课堂教学模式构建方面为课改实验学校创建单位提供学习借鉴的参考案例。罗定市教育局教研室的统一部署和本工作室主持人所在单位罗城中心小学的组织安排下,罗定市陈红霞名教师工作室于2021年5月12日到罗定市围底镇中心小学开展主持人展示课送课活动。活动流程:1.第二节(8:25—9: 05):陈红霞上展示课《三角形的认识》2.第三节(9:15—10;00):评课议课、交流研讨
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","type":1},{"audio_music_id":0,"img_height":1500,"img_size":574,"img_url":"https://ss-mpvolc.meipian.me/users/43882175/a8464e8b68db1cfb78e19467d406a36f__jpg.heic","img_width":2000,"is_origin":false,"source":0,"type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNDM4ODIxNzUvYTg0NjRlOGI2OGRiMWNmYjc4ZTE5NDY3ZDQwNmEzNmZfX2pwZy5oZWlj/nickname/572X5Z-O5Z-O5Y2X5bCP5a2m/userid/NDM4ODIxNzU=/sign/31cf8005dcf9d3d1c48583b47f2cfda1"},{"audio_music_id":0,"source":0,"text":"充分展现概念的生成过程。陈老师在教学三角形的意义时,都没有直接把“由三条线段围成的图形叫做三角形”这个定义直接呈现给学生,而是通过多种通道进行教学,陈老师利用学生生活的世界和所接触的事物大都和空间与图形有关,他们的生活经验是发展空间观念的宝贵资源。“你看到的最多的图形是什么?“陈老师通过播放图片和视频引领学生走进生活中的三角形,生活中的数学。发现图形之美。再通过让学生自己画一画三角形,逐步建立三角形的概念。在理解三角形定义陈老师又运用了多通道:如抓关键词、提出疑问、举出反例等。最后,通过练习,让学生通过观察分析,从正反两方面进行比较,使学生认识到三角形必须具备两个条件:一、是否具有3条线段;二、是否围成封闭的图形。从而进一步加深学生对三角形意义的理解。
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","type":1},{"audio_music_id":0,"source":0,"text":"画三角形的高,实际上与学生已学过的过直线外一点画已知直线的垂线段一样。陈老师利用旧知作铺垫引出新知。
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