以下是关于【观察物体】的公开课/优质课视频，一共121个
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41:4472《观察物体》北师大版小学数学六年级上册第六单元优质课例(赵柏亮)（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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39:54120