1, published and designed by Gansu Children's Publishing House, focuses on three levels: deep understanding, expansion and breakthrough, helping students understand the law of knowledge and establish a mathematical knowledge system.

2. Written by front-line teachers with rich teaching experience and high teaching level. Oriented to the optimization training of the first volume of the eighth grade mathematics of People's Education Press, systematic training is set up in chapters such as triangle, congruent triangles, axis symmetry, algebraic multiplication, factorization and fraction. Each part is related and relatively independent. Each unit has a review class and a unit test paper. Ask questions comprehensively and pertinently, and refuse to ask sea tactics. Every exercise is a powerful supplement to classroom teaching, which makes learning more targeted. This book is rich in content, focused and detailed in answers, which can improve students' problem-solving skills, enable students to master what they have learned and improve their autonomous learning ability.