以下是关于【长方形和正方形的特征】的公开课/优质课视频，一共97个
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39:5239《长方形和正方形》苏教版国标本小学数学三年级上册优质课(王燕)-第四届smart杯交互式电子白板教学应用大奖赛一等奖课例
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