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“教”以共进,“研”以致远
","type":1},{"audio_music_id":0,"ext":{"unique_id":"384591e1d5530671198bc38d29a67c61"},"sectionPublished":true,"source":0,"text":" 天气渐寒始于霜降,10月28日早,中枢二小全体数学老师在杨校长、曹副校长、教导主任陶老师的带领下,齐聚五年级148班共同聆听朱维俊老师的精彩课堂——《平形四边形的面积》。
","type":1},{"audio_music_id":0,"ext":{"unique_id":"1d3ce7a15ed6c9784757d8a49a850f3c"},"sectionPublished":true,"source":0,"text":" 《平行四边形的面积》一课,国内外很多名师上过。这一课,怎样定位教学目标?怎样突出教学的实效性、创新性。让扎实、充实、丰实,平实、真实的效果真正进入课堂呢?朱老师的这节课无疑给了我诸多的启示。
","type":1},{"audio_music_id":0,"ext":{"unique_id":"c03c5cbe83f6126ffa15d4bf593053bf"},"sectionPublished":true,"source":0,"text":"一、情景导入,激发需求。开课导入,朱老师采用设疑的方法,让学生猜一猜屏幕上的长方形和平行四边形两块图形哪块面积大?同学们在问题的驱动下大胆猜测,同时让学生有了操作尝试的欲望,知道长方形的面积等于长乘宽,那么平行四边形的面积又如何计算呢?自然就引入了今天所要探究的问题《平行四边形的面积》。
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1、数方格,感知转化。在学生数完方格汇报时,不仅说了数的结果,而且说了数的方法,老师重点评价了平移的方法,让学生初步体会到平行四边形可以转化成长方形。
","type":1},{"audio_music_id":0,"ext":{"unique_id":"2185848935156b2a6e2abf174e1a7043"},"sectionPublished":true,"source":0,"text":"2、把刚刚带有方格的平行四边形通过剪、补、移、拼等操作,应用转化。让学生通过以上活动,把平行四边形转化成长方形;再通过数格得到平行四边形的面积和拼成的长方形的面积是相等的。来理解拼成的长方形的长是原来平行四边形的底,长方形的宽是原来平行四边形的高。
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","type":1},{"audio_music_id":0,"ext":{"unique_id":"1d3ce7a15ed6c9784757d8a49a850f3c"},"sectionPublished":true,"source":0,"text":" 《平行四边形的面积》一课,国内外很多名师上过。这一课,怎样定位教学目标?怎样突出教学的实效性、创新性。让扎实、充实、丰实,平实、真实的效果真正进入课堂呢?朱老师的这节课无疑给了我诸多的启示。
","type":1},{"audio_music_id":0,"ext":{"unique_id":"c03c5cbe83f6126ffa15d4bf593053bf"},"sectionPublished":true,"source":0,"text":"一、情景导入,激发需求。开课导入,朱老师采用设疑的方法,让学生猜一猜屏幕上的长方形和平行四边形两块图形哪块面积大?同学们在问题的驱动下大胆猜测,同时让学生有了操作尝试的欲望,知道长方形的面积等于长乘宽,那么平行四边形的面积又如何计算呢?自然就引入了今天所要探究的问题《平行四边形的面积》。
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1、数方格,感知转化。在学生数完方格汇报时,不仅说了数的结果,而且说了数的方法,老师重点评价了平移的方法,让学生初步体会到平行四边形可以转化成长方形。
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