Technical secondary school. This set of textbooks is a new textbook of the national curriculum reform plan for secondary vocational education. According to the "Mathematics Teaching Syllabus for Secondary Vocational Schools" promulgated by the Ministry of Education in 2009 (referred to as the "Syllabus"), it was approved by the National Textbook Examination and Approval Committee for Secondary Vocational Education? Textbooks adhere to the orientation of "syllabus" to "course teaching objectives", and the selection of content strictly follows the requirements of "syllabus" for cognition and skills? [ 1]

According to the provisions of the syllabus on the content structure of teaching materials, this set of teaching materials is divided into five basic modules (on? Volume 2) (revised edition), vocational module (divided into "engineering" and "finance and economics?" Business and Services (Revised Edition) and Extensions (Revised Edition)? This book is the second volume of basic modules, including: series, plane vectors, equations of straight lines and circles, solid geometry, probability statistics? This book strives to embody the vocational education policy of "service-oriented, employment-oriented"; Accurate description of basic concepts and principles, clear description of scientific facts and social phenomena, and cited data? Whether charts and other materials are reliable; Have good practical knowledge? Structural rationality? Teaching applicability and flexibility? Teaching materials are equipped with teaching reference books simultaneously? Students-oriented learning and training books and rich digital teaching resources, among which digital teaching resources mainly include electronic teaching plans? Teaching courseware? Excellent teaching case? A guide to the application of mathematical software in teaching? Video lecture? Online courses? Operating system? Secondary vocational school students' academic evaluation and monitoring system? These resources are carefully designed according to the teaching rules of vocational education and can be used by schools? [ 1]