1. With the system of 'Concept + Exploration + Problem', which is composed of a complete analysis of the 5 types of textbooks in the 2015 revised curriculum, you can thoroughly prepare for the exam.
2. It is a customized textbook that can satisfy both high and low ranking students with various types of questions that reflect the trend of the new curriculum.
3. You can learn easily and fun with videos, from the implementation of 'O2 Lab' to the exploration process, explanation of principles, and final quiz by composing the exploration in O2 as a video.
