It is a synchronous tutoring learning software for junior high school mathematics textbooks. According to the inquiry of Euler Junior High School Mathematics APP, "Euler Junior High School Mathematics app" is an education and learning app under Beijing Youyouchang Technology Co., Ltd., and its application covers all grades of curriculum materials published by Junior High School People's Education Edition and Beijing Normal University Edition, which brings together knowledge points of various chapters, facilitates users to browse at any time, and provides related course practice guidance, effectively helping middle school students to review after class and preview before class. It is a synchronous tutoring learning software for junior high school mathematics textbooks.