Mathematics in a square we want to know b “In this small squared, there is a core knowledge that everyone needs to know”. 100 absolute concepts of mathematics to understand right with the picture! The new Jess Squared series, published by the publisher, is a series of liberal arts from Quantum Books, UK, featuring authoritative texts, colorful color illustrations, and infographics. All. In a convenient size, I divided the book into ten chapters, each containing ten key concepts. From elementary school students to adults, it provides a fun and meticulous introduction to anyone who wants to understand the world around us more scientifically and reasonably. On the left side of the text, there are texts explaining the concept, and on the right side are illustrations, photographs, or infographics to help you understand the contents. Choose 100 different things to explain. It is essential knowledge as a core knowledge and reflects the latest research results. Its useful in some ways, funny or beautiful in some ways, or it just contains something “strange”. The book takes readers from the basic objects of mathematics, from numbers and shapes to incredible geometry, higher levels of logic and infinite space. The mathematics, which were frustrating because I dont know what it is, will turn into an interesting study that makes you hit your knees with Aha. This book is highly recommended for middle and high school students who are just beginning to become interested in mathematics, as well as so-called "contributors" students and adults from the literature.