Mathematics extracurricular books suitable for grade three are interesting paradise for numbers and formulas.

Introduction of book number and style fairyland;

The books published by People's Posts and Telecommunications Publishing House 202 1 were edited by Komiyama Boren and translated by Xu Xiaoqing. This book uses some cute little icons in its design, which makes the slightly boring subject of mathematics lively and interesting. As a knowledge point, the opposite page is well organized, which is especially suitable for pre-school preview and after-school review of senior primary and middle school students.

There are not only knowledge but also interesting stories in the book. Based on the Nobel Prize in Mathematics and the geometry of the ancient Greeks, rationality and sensibility are added. It is a wonderful extracurricular reading.

Born in 1949, the author is a well-known educational critic in Japan and a member of the Japan Education Society. 1997, opened a tutorial school for high school students named "Fun Learning"; Since 2005, the cram school for junior middle school students has operated in the form of academic research groups. His main works include The Wonderful World of Mathematical Theorems, Arithmetic Useful for Adults and interesting and easy-to-understand mathematics.

Brief introduction of digital paradise content:

Mathematics is everywhere, from the calculation formula in the exam to physics and economics. Mathematics makes people's lives more convenient. The author of this book introduces many basic knowledge of mathematics in primary and secondary schools with concise words and easy-to-understand illustrations. This book has five chapters.

The preface is the introduction of the book, which briefly introduces the birth of mathematics and counting units. Chapter 1 summarizes some important formulas in the textbook; The second chapter introduces many important and commonly used mathematical symbols, such as+,–,×, ⊙, =, >, <, △, sin, cos, tan, etc.

Chapter 3 introduces some common concepts in the textbook, such as quadratic function curve, sine theorem, cosine theorem, trigonometric function and so on. Chapter 4 introduces the application of mathematics in daily life, such as calculating the earth branch according to the solar calendar year and calculating the air humidity.