http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Hướng dẫn chương trình giáo dục mầm non mẫu giáo lớn (5-6 tuổi)
MN066 Phương pháp tổ chức cho trẻ làm quen với toán ; MN044 Phương pháp tổ chức hoạt động vui chơi