Assume you are being interviewed for the position of Director of Curriculum Design at your organization or one with which you are familiar. From those explained in the textbook, recommend three sources (science, society, morality, knowledge, or the learner) you believe are essential principles contributing to your philosophy of curriculum design. Provide a rationale to support your response. Analyze the major curriculum designs (e.g., subject-centered designs, learner-centered designs, and problem-centered design) discussed in the textbook. Identify a subject matter, skill, grade level (if K-12), and delivery mode (classroom, online, or computer-assisted). Then, recommend a curriculum design that would provide optimal instruction and student learning. Provide a rationale to support your response.