1, both of whom are well-known figures in the field of mathematics education: Hu is a mathematics teacher in the middle school affiliated to Fudan University and was awarded the honorary title of "Red Flag Bearer on March 8th" in Shanghai, while Dai is one of the hosts of the key project "Implementation and Evaluation of Senior High School Mathematics Curriculum" of Shanghai Education Commission and an excellent mathematics educator.

2. The teaching method and teaching effect are highly recognized: Mr. Hu pays attention to cultivating students' thinking ability and problem-solving ability, and the classroom atmosphere is relaxed and pleasant, which is deeply loved by students, while Mr. Dai pays attention to the systematic explanation and in-depth excavation of knowledge points, which enriches the classroom content and enables students to master mathematics knowledge better.