Link bài giảng Elearning khối THCS: https://danang01-my.sharepoint.com/personal/491_danang_itrithuc_vn/_layouts/15/onedrive.aspx?id=%2Fpersonal%2F491%5Fdanang%5Fitrithuc%5Fvn%2FDocuments%2FKHO%20DU%20LIEU%2FELEARNING%2FTHCS&ga=1
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