* Basic Concept
We have covered not only textbook concepts but also advanced concepts and concepts related to subsequent grades, and have helped students build the foundation for advanced learning by solving problems based on those concepts.
* Top [S]
Through 'one sentence + image', you can intuitively feel and understand the algorithm and core concepts of solving advanced problems.
Based on these feelings and understanding, you can solidify your top-level skills by solving similar problems.
* Math Master
Solve a variety of advanced problems and competitive exam-level problems in addition to the main advanced types and challenge yourself to be in the top 3%.

Special appendix
We have organized the main text's representative type problems and Math Master's problems so that you can review them all 1:1.