This is the latest installment in the "Juken-Noh" (Exam Brain) series.
It materializes the strategies for tackling junior high school entrance exam math problems, taught by a charismatic instructor specializing in difficult junior high school entrance exams. Focusing on nets, it covers 11 types of three-dimensional figures related to junior high school entrance exams. It broadly explains everything from the basic knowledge of these three-dimensional figures to problem-solving techniques.

This is a set of supplementary materials and a drill book.
The supplementary materials allow you to make a three-dimensional figure, which can be difficult to visualize from a net, appear simply by pulling a string. This provides an easy visual experience, deepening your understanding of three-dimensional figures. There are 11 types of nets, covering almost all the three-dimensional figures needed for junior high school entrance exams. The drill book includes everything from basic problems to past exam questions. It carefully explains everything from the basic knowledge of each three-dimensional figure to problem-solving techniques. You can thoroughly train at home, visualizing exam problems like puzzles.

〈How to use the supplementary materials〉
There are 11 types of nets. Simply attach each net to a mounting board and thread a string through the holes, and you're ready to go. When you pull the string as instructed, a three-dimensional figure will appear. You can clearly see how a three-dimensional figure is formed from a net. The nets come with pre-creased folds and cuts, and double-sided tape is also included, making assembly easy. The back of the mounting board also contains the "properties of each three-dimensional figure," formulas for calculating volume and surface area, and examples of nets other than those in the supplementary materials. Furthermore, you can view videos of three-dimensional figures appearing by scanning a QR code.

〈How to use the drill book〉
・Start with "Problems using the supplementary materials (11 questions in total)." For each of the 11 types of three-dimensional figures, you will review basic knowledge such as the name and properties of the figure, and train to visualize three-dimensional figures from nets.
・"Basic problems (8 questions in total)" are designed to check your fundamental knowledge related to nets. You will calculate the area, volume, and surface area of various figures.
・"Practice problems (11 questions in total)" are practice problems designed with exams in mind.
・"Practical problems (8 questions in total)" include past exam questions.

〈Comment from the editorial department〉
Three-dimensional figure problems appear almost every year in junior high school entrance exams. It's often difficult to mentally visualize three-dimensional figures drawn on a flat piece of paper, as it requires the ability to spatially perceive and imagine them. However, once you experience it with your eyes, hands, and mind, it becomes much easier to imagine afterward. This book uses the supplementary materials to make it easier to visualize. It includes supplementary materials for 11 types of three-dimensional figures that will be useful for junior high school entrance exams, and the drill book has been expanded by 8 pages, providing rich content.
【Table of Contents】
〈What's included〉
Supplementary materials: 11 nets, 11 mounting boards, 1 sheet of double-sided tape, 1 string
Drill book: 84 pages in 4 colors + 2 colors (38 problems in total)