http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Bài tập đánh giá năng lực khoa học tự nhiên theo tiếp cận PISA
Nội dung gồm 400 bài tập và khoảng 200 câu liên quan tới các lĩnh vực khoa học phổ thông.
Problems,exercises,etc.,Câu hỏi và bài tập v.v