http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Nội dung giới thiệu các phương pháp tọa độ, hình học không gian, toạ độ trong không gian và các bài toán về tính khoảng cách giữa hai điểm có tọa độ.
Study and teaching (Secondary),Dạy và học (Trung học)