"Three Mathematics Books for Children" Author: Liu Xunyu / Publisher: Tuanjie Publishing House

Mr. Ma on Mathematics is a classic popular science book on mathematics written by Liu Xunyu, a famous mathematics educator, for primary and secondary school students. This book is written in the third person, "Mr. Ma", and mainly focuses on how to use graphic methods to solve some arithmetic problems. It collects more than 100 questions for explanation, which fully reflects the author's rigorous attitude towards mathematics.

Mathematics Fun is a classic popular science book written by Liu Xunyu, a famous mathematics educator, for primary and secondary school students. The book contains all mathematics articles that the author picked up from daily life. The boring, difficult, and headache-inducing mathematical topics and algorithms close to people's daily lives have been cleverly written by the author into interesting and readable texts.

"The Garden of Mathematics" is a classic popular science book for primary and secondary school students written by Liu Xunyu, a famous mathematics educator. This book systematically explains the concepts of functions, continuity, induced functions, differentials, integrals and totals, as well as the basic principles of their operation methods. The abstract and boring content of advanced mathematics is written in a clever way by the author. Anyone who has learned elementary algebra and geometry will be able to read and master it easily and effortlessly, so this book can be used as an important self-study book for primary and secondary school students.

Liu Xunyu (1896-1967) is a modern Chinese mathematician, mathematics educator, and publisher. He was influenced by French mathematics education. He was a mathematics teacher or principal in many universities and middle schools, and served as deputy editor-in-chief of the People's Education Press. He reviewed my country's primary and secondary school mathematics textbooks, published primary and secondary school mathematics textbooks and popular science books, published a large number of papers on mathematics education, and prepared to publish youth journals such as "Middle School Students" and "New Youth". His works have had a profound impact on Yang Zhenning, Gu Chaohao, Feng Zikai, etc.