视频地址:https://video.cache.bdschool.cn/vd/b8661c8f96760ee76997c829d79c3998.mp4
附件:0529初二数学(北京版)-正方形的判定-1教案.docx
附件:0529初二数学(北京版)-正方形的判定-2ppt.pptx
附件:0529初二数学(北京版)-正方形的判定-3学习任务单.doc