Which version of mathematics does homework help Kan Honggan teach?

Beijing normal university edition. According to official website-homework help's inquiry, Mr Kan Honggan of homework help teaches mathematics in Beijing Normal University, and the teaching type is the frontier course of first-year mathematics. Homework help is an online education APP of K 12, which was launched by Boat Education Technology (Beijing) Co., Ltd. on 20 14 and 14. It aims to provide learning counseling services for primary and secondary school students in China.

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