Highly Anticipated "Junior High School Entrance Exam Cram School Method" Now Available in Book Form for the First Time! 'Photon Sansu Club Success Drills' (Math Skills Enhanced with Memorization Calculation Cards / Math Skills Enhanced by Drawing Diagrams) Now Available for Pre-order.

Gakken Co., Ltd. (Shinagawa, Tokyo / Representative Director and President: Tatsuya Nanjo), a group company of Gakken Holdings Co., Ltd. (Shinagawa, Tokyo / Representative Director and President: Hiroaki Miyahara), began pre-orders on April 10, 2026, for 'Junior High School Entrance Exam: Math Skills Enhanced with Memorization Calculation Cards' and 'Junior High School Entrance Exam: Math Skills Enhanced by Drawing Diagrams' from the 'Photon Sansu Club Success Drills' series (scheduled for release on July 2, 2026).

[Click here to pre-order the books]

"Math Skills Enhanced with Memorization Calculation Cards"

・Amazon: https://www.amazon.co.jp/dp/4053064007/

・Rakuten Books: https://books.rakuten.co.jp/rb/18590830/

"Math Skills Enhanced by Drawing Diagrams"

・Amazon: https://www.amazon.co.jp/dp/4053064015/

・Rakuten Books: https://books.rakuten.co.jp/rb/18590826/

■What math skills should be acquired in lower grades for success in desired schools?

Photon Sansu Club is a highly regarded specialized cram school for junior high school entrance exams, with over 80% of its students advancing to top-tier schools like Gosanke and Waseda-Keio (according to the cram school's own results). This time, Nobutatsu Takei, the head of Photon Sansu Club, has personally authored and for the first time published the cram school's methods in book form.

Mr. Takei states that "the math exam for junior high school entrance is a race against time," and the fundamental skills needed to solve problems quickly and accurately are "calculation" and "drawing diagrams." Math is a major factor that determines success or failure in junior high school entrance exams. By working through the 'Photon Sansu Club Success Drills' series, students can firmly acquire the basic skills for entrance exam math in their lower grades.

■What is "Math Skills Enhanced with Memorization Calculation Cards"?

"Being fast at calculation" means "how quickly and accurately one can retrieve the answers to several calculations that should be memorized." To put it without fear of misunderstanding, the key to excelling in calculation is "memorization." All calculations are merely repetitions of the multiplication tables for the four basic operations (addition, subtraction, multiplication, and division). Therefore, Mr. Takei says that if one memorizes the multiplication tables for the four basic operations, calculations can be done quickly and accurately.

This book thoroughly memorizes the four basic operations (addition, subtraction, multiplication, and division) with 324 multiplication table cards and uses drills to confirm that solid calculation skills have been acquired.

▲Memorize calculations with cards. *Image is for illustration purposes only.

▲Solve problems to confirm actual calculation skills. *Image is for illustration purposes only.

■What is "Math Skills Enhanced by Drawing Diagrams"?

This book was born from Mr. Takei's experience that "students who are good at geometry problems are good at drawing diagrams!"

If one can draw diagrams correctly and quickly, it can lead to discovering how to solve problems, allow more time for careful thinking, and become a powerful weapon in entrance exams.

This book starts with practicing drawing straight lines, which are fundamental to drawing diagrams. Once one can freely draw straight lines horizontally, vertically, and diagonally, one will be able to skillfully draw plane figures, solid figures, and even tables.

Furthermore, this book not only covers geometry problems but also enables students to skillfully draw "area diagrams" used when solving frequently appearing word problems in entrance exam math, such as Tsurukame-zan (crane and turtle problem) and average problems.

Starting with "tracing" and featuring plenty of illustrations, the pages are designed so that even younger children who have not yet learned geometric terms can work through them without difficulty.

▲Structure that is easy for lower grades to learn. *Image is for illustration purposes only.

This series is recommended for those who plan to take junior high school entrance exams but don't know where to start studying, or for those who are unsure about taking the exams but want to study something in case they do. Please take this opportunity to pre-order.

■What is Photon Sansu Club?

Photon Sansu Club Co., Ltd. is a specialized math cram school for elementary school students aiming to pass the most difficult junior high school entrance exams. With small class sizes, accelerated courses where all students study one grade level ahead, and teaching methods utilizing original textbooks, the school boasts a high success rate, with over 80% of its students advancing to Gosanke, Waseda-Keio level, or higher junior high schools every year. Furthermore, in 2021, it opened an online classroom, receiving high praise not only from within Japan but also from families residing overseas.

[Official Website]

・Photon Sansu Club (In-person): https://www.photon-sansu.jp/

・Photon Sansu Online Classroom (Online): https://online.photon-sansu.jp/

[Product Overview]

■'Photon Sansu Club Success Drills Junior High School Entrance Exam: Math Skills Enhanced with Memorization Calculation Cards: Addition, Subtraction, Multiplication, Division'

■'Photon Sansu Club Success Drills Junior High School Entrance Exam: Drawing Diagrams to Enhance Math Skills