You can thoroughly prepare for your internal exams with the 'Concept + Exploration + Problem' system, which was created by thoroughly analyzing the four textbooks of the 2015 revised curriculum.
This is a customized textbook that can satisfy both top and bottom students with a variety of question types that reflect past exam trends.
By organizing the exploration of O2 into a video format, we have implemented an 'O2 Lab', allowing you to learn easily and enjoyably through videos, from the exploration process to explanation of principles and final quizzes.