The arrangement principle of official document teaching materials is to let students get the maximum learning effect in the shortest time; At the same time, considering the absolute proportion of calculation in high school mathematics, the official documents broke through the school syllabus and carefully arranged a set of mathematics textbooks step by step to help students achieve the goal of "self-study, self-study to high school textbooks". Textual mathematics textbooks span the whole stage from kindergarten to university, from simple marking exercises to advanced mathematics. Because of the document-based learning method, the whole set of teaching materials is subdivided into multiple stages, which narrows the gap between learning stages as much as possible and facilitates each student to learn by himself. So anyone can use this set of textbooks to improve their learning ability and achieve unexpected results. Since the publication of the official mathematics textbook, it has been constantly absorbing experience from practical application and constantly revising, striving to improve the textbook in terms of the number of questions, order and examples, so as to achieve the best learning effect. Official Document Mathematics Course: 1. Arrange learning materials step by step, and systematically train students' logical thinking ability. 2. The content of learning materials is carefully arranged by experts and constantly improved. 3.2 1 set of teaching materials, from simple to deep, provide learning materials suitable for each child for students of different ages, covering digital exercises, four operations, calculus and so on. , cultivate students' various functions (quadratic function. J By studying algebra, factorization, irrational numbers, quadratic equations, equations and higher-order equations, we can cultivate the basic abilities necessary for higher mathematics and lay a good foundation for learning K textbook. I study factorization, square root, quadratic equation and quadratic function on the basis of H textbook, which lays a good foundation for learning J textbook. H On the basis of the algebraic operation ability of G textbook, cultivate students' ability to solve linear equations of one variable to four variables, and lay a good foundation for learning I textbook. G on the basis of the fractional operation ability of F textbook, cultivate the operation ability of positive and negative numbers and algebra, and lay a good foundation for learning H textbook. F improve the fractional operation ability of E textbook, cultivate the elementary arithmetic ability of complex fractions, and lay the foundation for learning algebra of G textbook. E on the basis of four operations of addition, subtraction, multiplication and division and division ability, cultivate the ability of four operations of fractions, and lay a good foundation for learning F. On the basis of textbook C, the ability of multiplication and division is further improved, and it is required to master the division operation of two digits, and gradually get used to the concept of "fraction", which lays a good foundation for learning textbook E. C on the basis of addition and subtraction of textbook B and further cultivates students' basic ability of multiplication and division. In order to lay a good foundation for learning textbook D. B on the basis of the mental arithmetic ability of addition and subtraction in textbook A, cultivate the written arithmetic ability of addition and subtraction, and lay a good foundation for learning textbook C. A On the basis of the mental arithmetic ability of addition and subtraction cultivated in textbook 2A, further improve students' mental arithmetic ability of addition and subtraction, requiring students to reach the level that can be calculated at a glance. To lay a good foundation for learning written arithmetic in textbook B. On the basis of the addition ability cultivated in textbook 3A, 2A continues to learn "plus 6" to "plus 10" in textbook 2A, and then learns the basic subtraction until it becomes 10, thus cultivating the mental arithmetic ability necessary for learning textbook A smoothly. 3A On the basis of the counting and writing ability cultivated in 4A textbook, let students learn the addition of 1 to 5. Based on the problem-solving ability of 5A textbook, 4A is required to master the size and sequence of 1 00 from 100 and be able to write, and at the same time improve the problem-solving ability and perceptual knowledge of logarithm, so as to prepare for the addition learning of 3A textbook. 5A Develop children's pen-holding ability, pen-carrying ability, problem-solving ability and attention by doing problems with pencils. Let children master the numbers within 30 more skillfully through counting exercises and drawing lines with numbers when doing problems.