Who is the expert of primary school mathematics proposition?
1, Wu Zhengxian: director of primary school of Beijing Academy of Educational Sciences, outstanding teacher in Beijing, member of CPPCC, special-grade teacher.
2. Li Yongle: The national famous mathematics teacher ranks first, and he is a well-known tutor of linear algebra for postgraduate study.
3. Ge Jun: A famous domestic math teacher naturally mentioned Ge Jun, a professor at Nanjing Normal University.