Liu Huanxing, 1963 1 1 Born, 198 1 Graduated from university, party member, senior middle school teacher of the Communist Party of China, outstanding teacher of Shandong Province, first prize of Shandong High School Mathematics Excellent Course, senior high school teaching expert of Weifang City, and top talent of Shouguang City. He has served as a math teacher and lesson preparation leader in Shouguang No.2 Middle School, a math researcher in senior middle school, deputy director of Shouguang Teaching and Research Section, and vice president of Shouguang No.1 Middle School. He is currently the vice president and deputy secretary of Shouguang Modern Middle School. Work hard to get things right, and work hard to get things done. Since teaching for 29 years, he has been doing things seriously, doing things with heart and concentrating on research. I have been teaching in Shouguang No.2 Middle School for ten years, and I have undertaken the teaching task of the graduating class. My college entrance examination results have been ranked first in the same class. The "variant teaching method" explored in practice has been well received by teachers and students. After working in the teaching and research section for 90 years, the "variant teaching" was extended to the whole city, which greatly improved the quality of mathematics teaching and created the "seven consecutive championships" of Shouguang Mathematics College Entrance Examination in Weifang City. 200 1 transferred to Shouguang No.1 middle school, responsible for the teaching and management of grades 2000, 2003 and 2006. In that year, the college entrance examination achieved remarkable results, and 06, 09 and 20 10 won the first and second prizes of Weifang Municipal Government Achievement Award. He has accumulated rich teaching management experience with his solid work, hard-working spirit, pragmatic attitude, impressive achievements and thoughtful thinking. He introduced his experience at the fourth annual meeting of mathematics in Shandong Province, which was highly praised by experts. The "variant teaching method" and "small infiltration and large infiltration" summarized in practice have been widely promoted in Weifang, and demonstration classes have been held in Weifang for many times; He has published more than ten papers in national journals such as Mathematics Bulletin, Teaching Reference of Shaanxi Normal University and Mathematics and Physics for Middle School Students.