1, CoCo Lee Mathematics in Yangzhou is a mathematics competition course for training elementary schools to senior high schools, while Yangzhou Gaoshu is to provide high-quality extracurricular tutoring for students. So it's good to teach math in Yangzhou.

2. CoCo Lee, Yangzhou, has a strong mathematics teacher force, complete facilities and clean and cool classrooms for students to use, while Yangzhou Koryo has a meager mathematics teacher force and incomplete facilities. So Yangzhou CoCo Lee is better at math.