The document discusses various models for designing lessons for textbooks at different educational levels, including Woolfok's model for general education, Dr. Durrani's model for middle school, the Singapore model, and a model developed by GTZ in Peshawar. It provides details on the key features and organization of these models, such as their focus on student-centered learning, inclusion of pre-reading and post-reading activities, and illustration of concepts through examples and exercises. The models aim to effectively convey content while developing students' skills through engaging lessons and multi-sensory learning experiences.