视频地址:https://video.cache.bdschool.cn/vd/52ac140fd9abfd606b7b39789737f79c.mp4
附件:0602初二数学(北京版)—中点四边形—1教案.docx
附件:0602初二数学(北京版)—中点四边形—2ppt.pptx
附件:0602初二数学(北京版)—中点四边形—3学习任务单.docx