http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Toán Lớp 4 gồm những nội dung chính như: số tự nhiên, bảng đơn vị đo khối lượng; bốn phép tính với các số tự nhiên hình học; giới thiệu các hình học cơ bản; tỉ số; phân số.