This is a problem book that compiles the algebra topics from the mathematics curriculum taught in junior high school into a single volume. The authors are teachers with extensive experience teaching at top-tier junior-senior high schools. The book is systematically structured, following the flow of algebra, and is well-balanced, covering everything from basic concepts to advanced topics in a logical order. It covers the content of the curriculum guidelines, as well as many advanced topics not typically taught in junior high school, allowing students to acquire the highest level of academic ability and smoothly transition to high school studies. Purchased on Amazon on December 21, 2022, for 1,650 yen. "New A-Class Junior High School Algebra Problem Book"