*Reflecting the contents of the 22nd revised curriculum*

Concept organization & basic problem solving
You can summarize the textbook's key concepts and basic formulas at a glance.
It contains basic problems that can be solved by immediately applying the concepts organized.

Master the essential types
We have broken down the types of questions that are sure to appear on school exams into categories and levels of difficulty to help you prepare perfectly for school exams.

Essential Type Twin Test
We have included twin problems similar to the types of problems in the Essential Type Mastery section to help you check the types you have learned previously.

Creative and convergent problems in textbooks
It presents integrated curriculum problems, communication problems, and creativity problems that appear on school exams.