Zhang Yu is one of the representatives of postgraduate mathematics, who has been engaged in advanced mathematics teaching and postgraduate counseling for many years. His teaching methods are novel and humorous, and he is good at explaining mathematics knowledge with stories and jokes, which is deeply loved by graduate students.

Teacher Zhang Yu has a unique teaching style. He is good at simplifying complex math problems so that students can understand them easily. His classroom atmosphere is active, focusing on inspiring students' thinking and encouraging them to actively participate in classroom discussions. In addition, teacher Zhang Yu has a strong ability to take exams, which can help students improve their problem-solving ability and improve their test scores.

Generally speaking, Mr. Zhang Yu is an excellent math teacher, who is loved and respected by the majority of students.