Introduction:
The NCERT SST textbooks are designed by the National Council of Educational Research and Training (NCERT) for students of Class 4. These textbooks cover various subjects such as History, Geography, Civics, and Economics. In this response, we will discuss whether these textbooks are suitable for self-study or if they are more teacher-oriented.

Suitable for Self-Study:
1. Comprehensive Content: The NCERT SST textbooks provide a comprehensive and well-structured curriculum that covers all the essential topics in each subject. The content is presented in a clear and concise manner, making it suitable for self-study.
2. Engaging Activities: The textbooks include a variety of engaging activities, exercises, and illustrations that help students understand the concepts better. These activities promote self-learning and encourage students to explore the topics on their own.
3. Easy-to-Understand Language: The language used in the textbooks is simple and easy to understand. The content is written in a student-friendly manner, which makes it accessible for self-study purposes.
4. Practice Questions: The textbooks contain a wide range of practice questions at the end of each chapter. These questions are designed to assess the students' understanding of the topics and help them practice and revise the concepts on their own.

Teacher-Oriented Features:
1. Lesson Plans: The textbooks provide detailed lesson plans for teachers, which include suggested activities, teaching strategies, and assessment methods. These features are primarily designed to assist teachers in planning their lessons effectively.
2. Teacher's Manual: The NCERT SST textbooks also come with a teacher's manual that provides additional guidance and resources for teachers. It includes answers to the textbook questions, additional activities, and supplementary materials. These resources are primarily intended for teachers to enhance their teaching methodologies.

Conclusion:
In conclusion, the NCERT SST textbooks are suitable for self-study as they provide comprehensive content, engaging activities, and practice questions. However, they also have teacher-oriented features such as lesson plans and a teacher's manual, which are primarily designed to assist teachers in their instructional planning. Overall, these textbooks can be effectively used for self-study as well as in a classroom setting with the guidance of a teacher.