HighSchool
math: http://www.gaokao.com/e/20090915/4b8bcfd99fe6f.shtml
1st round: lecture notes: http://www.gaokao.com/e/20100901/4c7e0b043508a.shtml
2. physics
1st round:http://ishare.iask.sina.com.cn/download/explain.php?fileid=35261481
skype+idroo: 1. to insert word file: convert word file to PDF, then PDF to image file, finally insert image file to idroo. cool.
Obama: My education, My future: http://northeast.mpls.k12.mn.us/my_education_my_future_speech