Xu:
Dalian model worker, senior math teacher, secretary of the General Party Branch. Excellent teacher in China, model teacher in Dalian, advanced worker in college entrance examination. After working in Dalian, he was once rated as an excellent model in Shahekou District of Dalian and an excellent party member in Shahekou District of Dalian for many times.
Geng Xiaodan:
1998 graduated from the department of mathematics of Liaoning Normal University, and obtained the master's degree in mathematics education in 2005. Now she is a math teacher in Dalian No.80 Middle School. In 2020, he recorded several math classes and was awarded as the 2020 excellent course of Dalian Education Digital Classroom.
Zhang Jun:
Senior high school math teacher, 1999 graduated from the Department of Mathematics of Northeast Normal University, and now teaches in Dalian No.24 Middle School. He has been rated as a backbone teacher in Dalian, an excellent class teacher in Dalian, an advanced individual in three educational principles and an excellent party member in Dalian's education system.