I'm not sure. I think He Laoshi in Southeast Mathematics and Physics is very good. In the classroom teaching design, He Laoshi takes appropriate conventional and unconventional questions as the carrier of teaching. In addition to widely collecting questions according to the teaching content, He Laoshi can also create his own questions, transforming the textbook questions and college entrance examination questions into situational questions, open questions and application questions, accumulating and perfecting them, and forming a distinctive "He's" question. Then, through the inspiration and guidance of these problems, the teaching of mathematical process is carried out in an all-round way in the classroom, which makes students have obvious consciousness tendency and emotion, thus greatly increasing the enrichment and knowledge capacity of the classroom. The learning effect is very obvious