The "Cube Math" series that will help you become number one in math.
Free video lectures on solving descriptive problems

"Cube Math Skills" is a book on conquering problem types.
You can master various problem types by systematizing problems with the same concept or with the same solution method into three stages: type, confirmation, and reinforcement.
In order to prepare for the important descriptive part of the process-centered assessment, it is structured as a three-stage descriptive learning of practice, stage, and practice, so that you can perfectly train yourself to write answers.
By matching the problems in the Progress Book and Matching Book 1:1, you can review what you learned in the Progress Book once more in the Matching Book.