Sidae Injae Books Launches 'Baek Geon-ah Signal Series' for Ssangsa Selectors

For students choosing the double history subjects (World History, East Asian History) in the CSAT elective subjects, Sidae Injae Books, the flagship brand of Highconcy Books (CEO Oh Woo-seok), has released the 2025 Baek Geon-ah Signal Past Questions + Variant Problem Series (East Asian History, World History) (author: Baek Geon-ah History Research Team).

Many students who are history enthusiasts, often called "yeokdeok," tend to select both World History and East Asian History. Choosing both World History and East Asian History not only satisfies intellectual interest in history but also reduces the perceived study load since the condensed content of East Asian History is part of World History.

The 2025 Baek Geon-ah Signal Past Questions + Variant Problem Series (East Asian History, World History) for students selecting the double history subjects goes beyond the limitations of a simple past question book by covering both concepts and problem-solving, enabling perfect preparation for 'East Asian History, World History.' It carefully selects 100 evaluation institute past questions each for the upper and lower volumes in line with the current curriculum, and includes one-to-one variant problems for each. These are not mere mass-produced variant problems but are composed of variant questions with various meaningful elements such as concept organization, checking untested elements, attitude correction, strengthening data interpretation skills, and confirming key timelines. Additionally, with the unique perspective of the content creators, materials and answer choices for each problem are perfectly selected to objectively assess difficulty, verify correlations with other past questions, organize various tips and skills, and establish correct behavioral guidelines for attitude correction. This design provides detailed feedback like private tutoring, allowing students to internalize and apply it practically.

The Baek Geon-ah History Research Team is Sidae Injae’s first social studies team specializing in producing CSAT history content (Korean History, East Asian History, World History). In the current environment where it is difficult to obtain high-quality history content, over 30 history enthusiasts have joined forces to develop quality content, resulting in Sidae Injae holding a unique position as the 'most purchased content by history examinees.'

The 2025 Baek Geon-ah Signal Past Questions + Variant Problem Series [Upper Volume] (East Asian History) is currently available for purchase on the official Sidae Injae Books website, as well as at specialized bookstores including Kyobo Bookstore and Yes24.