It depends. From that direction. Learning and thinking are very targeted, mainly to let students know all kinds of body shapes and do problems. Teacher Gauss will talk about usage and ideas, mainly to make students think.

"Mathematics Textbook for Competition in Senior Four Schools" is published by East China Normal University, with a full set of 8 volumes and four grades. Each grade is divided into two volumes. There are 20 lectures in each volume, and the last lecture in the next volume of 345 is the final exam paper. The second volume of grade six is a variety of comprehensive examination papers. The content of the textbook is printed in full color, and a booklet with black and white answers is pasted on the back of the book with adhesive.