Grade 9 21st Century Math Olympiad Practical Standard Competition Textbook

Author: Liu Yuzhao, Feng Ruixian, Sun Shifang, Chen Xiao
Publisher:
Publish Date: 2005-10-01
Features:
"Mathematics is an excellent tool."
"Mathematics reflects the truth of objective things."
"Mathematics not only possesses truth but also possesses the highest and most sublime beauty. People will find true joy in mathematics."
"Mathematics can make your thinking correct and agile. With correct and agile thinking, you will have the possibility to climb the mountain of science."
The profound remarks of the sages have sparked waves of enthusiasm among young people to explore the potential of mathematics. To meet the needs of young people in exploring the mysteries of the mathematical kingdom, we have specially invited experienced coaches from mathematics olympiad schools in Beijing and Jiangsu to compile this set of primary school "21st Century Gold Medal Olympiad Mathematics Competition Textbooks."
This set of textbooks has the following features:
(1) Concise Explanation and Practice, Clear Themes. Each grade is divided into two volumes, with each volume organized into several chapters based on different themes. In the examples, a special section titled "This is How to Think" is included to guide rational thinking, identify key solutions, and train exercises that focus on inspiring thinking and strengthening the transformation of knowledge into ability. This provides a systematic and comprehensive demonstration platform for students participating in various mathematics competitions. This is the unique feature that distinguishes this book from other similar textbooks.
(2) Interwoven Framework, Step-by-Step Progression. The grades form a spiral progression framework, with vertical connections and horizontal independence. Lower grades use a picture-rich approach to cultivate mathematical emotions; middle grades help students initially grasp reasoning and judgment through mathematical language; and grades 5 and 6 use reasoning, judgment, analysis, and summarization to improve the ability to apply basic principles to solve practical problems. Some more challenging questions serve as a stepping stone to motivate students to win gold medals.
(3) Practical and Efficient, Highly Forward-Thinking. We have always been attentive to the latest trends in mathematics education and the new directions of "Olympiad" competition questions. We have introduced contextual problems, exploratory problems, open-ended problems, and research-type problems. For different types of questions, we have appropriately added "Summary," "Explanation," or "Smart Discovery" to help guide and organize the material. Selected examples and training exercises are drawn from competition questions from various parts of the country, such as "Olympiad" and "Hua Luoqing Mathematics," and are accompanied by inspirational and instructive classroom teaching. Here, we express our heartfelt gratitude to the question setters.
This set of textbooks is suitable for classroom teaching in Olympiad mathematics schools, Hua Luoqing mathematics schools, and various mathematics interest schools. It is also the best book for parents to help their children learn mathematics. It should also be noted that due to the haste in writing, limited by our knowledge, there may be inappropriate or incorrect places. We welcome criticism and correction from teachers and students.