网板课件赛136期
[size=5]小学组[/size][attach]26988[/attach] [size=5]初中组[/size]
[attach]26989[/attach] [size=5]高中组[/size]
[attach]26991[/attach] 感谢赛友们的精彩创作和无私分享。截止到目前为止网板课件赛136期有12位赛友的60个参赛作品:
王广喜[url=https://www.netpad.net.cn/singleFile.html?id=141771#posts/141771]https://www.netpad.net.cn/singleFile.html?id=141771#posts/141771[/url]
樊广顺[url=https://www.netpad.net.cn/singleFile.html?id=141710#posts/141710]https://www.netpad.net.cn/singleFile.html?id=141710#posts/141710[/url]
郭根秋[url=https://www.netpad.net.cn/presentationEditor/presentationPlay.html#posts/4485]https://www.netpad.net.cn/presen ... lay.html#posts/4485[/url]
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曹 娟[url=https://www.netpad.net.cn/singleFile.html?id=141727#posts/141727]https://www.netpad.net.cn/singleFile.html?id=141727#posts/141727[/url]
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张绍明[url=https://www.netpad.net.cn/singleFile.html?id=140538#posts/140538]https://www.netpad.net.cn/singleFile.html?id=140538#posts/140538[/url]
吴宇迪[url=https://www.netpad.net.cn/singleFile.html?id=140554#posts/140554]https://www.netpad.net.cn/singleFile.html?id=140554#posts/140554[/url]
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常铁虎[url=https://www.netpad.net.cn/presentationEditor/presentationPlay.html#posts/4470]https://www.netpad.net.cn/presen ... lay.html#posts/4470[/url]
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杨志友[url=https://www.netpad.net.cn/presentationEditor/presentationPlay.html#posts/4473]https://www.netpad.net.cn/presen ... lay.html#posts/4473[/url]
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孙国华[url=https://www.netpad.net.cn/singleFile.html?id=141741#posts/141741]https://www.netpad.net.cn/singleFile.html?id=141741#posts/141741[/url]
陈 宇[url=https://www.netpad.net.cn/presentationEditor/presentationPlay.html#posts/4488]https://www.netpad.net.cn/presen ... lay.html#posts/4488[/url]
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李文录[url=https://www.netpad.net.cn/singleFile.html?id=140550#posts/140550]https://www.netpad.net.cn/singleFile.html?id=140550#posts/140550[/url]
付小华[url]https://www.netpad.net.cn/presentationEditor/presentationPlay.html#posts/4469[/url]
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[url]https://www.netpad.net.cn/singleFile.html?id=140719#posts/140719[/url] [size=5]136期小学组最优作品[/size]
陈宇老师
[url=https://www.netpad.net.cn/presentationEditor/presentationPlay.html#posts/4488]https://www.netpad.net.cn/presentationEditor/presentationPlay.html#posts/4488[/url]
突出优点:课件从学生已知的平行四边形特征引入,打破一组对边平行,得到梯形。通过各种“变形”,得到不同形状的梯形、直角梯形、等腰梯形。在以上操作获得对梯形特征的充分感知体验基础上,给出梯形的文字表述。
为了防止思维定式,特意将两组对边都设计成可变化的,并且不平行的一组对边的交点可近可远,这样的设计有利于把握梯形本质特征。
从一般四边形逐渐“特殊化”得到其他类型的四边形,每一次“特殊化”都与变化前形成对照,显现其内在联系,非常好。 [size=5]136期初中组最优作品[/size]
郭根秋老师
[url=https://www.netpad.net.cn/presentationEditor/presentationPlay.html#posts/4485]https://www.netpad.net.cn/presentationEditor/presentationPlay.html#posts/4485[/url]
突出优点:本课件对教材理解透彻,重视提出问题的设计,重视学习过程中学生的体验,界面图形剪拼演示合理清晰。
建议:
最后适当延伸性地说明一下:平方后等于3、5、6、7、8、10.....的数,都是无理数。 [size=5]136期高中组最优作品[/size]
杨志友老师
[url=https://www.netpad.net.cn/presentationEditor/presentationPlay.html#posts/4473]https://www.netpad.net.cn/presentationEditor/presentationPlay.html#posts/4473[/url]
突出优点:本课件对椭圆和双曲线的作图(轨迹)研究深入、设计全面,共设计了17种椭圆或双曲线的作图,多种压缩拉伸法,定义法、切线法、多种族线包络法、极坐标与参数方程等等,考虑问题全面,对教材和问题进行了很好的拓展和延伸。每一个课件的设计都配有制作说明、轨迹展示、动画效果、推理证明。
建议:
本课件显然不是针对一节课设计的,因此每一种作图方法都对应了相应类型的问题探索方法,即可以配一些例题,或通过习题解答来提炼作图方法。
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