以下是关于【正方形的判定与性质】的公开课/优质课视频，一共160个
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39:529《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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39:3523《长方形、正方形面积的计算》人教版小学数学三年级下册优质课(王国新)（第五届SMART杯交互式电子白板教学应用大奖赛三等奖）
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