Huong ung phong trao ke hoach nho cua truong.
Lop52,53,54thu gom duoc 460 kg giay.Tinh so giay moi lop biet cu thu duoc 3kg cua lop 52 thi thu duoc 2kg cua lop 53,neu thu duoc 3kg thi thu duoc 4kg.
Giai ca cach lam nhe ban nao tu tin lam nhanh va dung ho minh