Sat. Science. tr. — Orenburg: OGPU, 2011. — 232 s. The collection is devoted to the history of mathematical education in Orenburg since the 60s of the XIX century. The main attention is paid to the teaching of mathematics before the revolution in secondary schools in Orenburg - men's gymnasium, teacher's institute and real school . Provides information about teachers, their teaching methods and some teaching aids. The articles of this section of the collection are based mainly on the study of documents of the State Archives of the Orenburg Region. The collection also includes materials related to the teaching of mathematics in the Soviet secondary school .. The full text of the brochure K. published at the beginning of the 20th century is given as an appendix. A. Toropov "Magic series and its application to solving problems", which is still of interest from the point of view of the methodology of teaching geometry.