What are the different between Tyler and Haida taba model?

The Tyler model, developed by Ralph Tyler, emphasizes a systematic approach to curriculum development based on clear objectives, assessment, and evaluation. It focuses on the purpose of education and the needs of students, prioritizing measurable outcomes. In contrast, the Haida Taba model, created by Hilda Taba, advocates for a grassroots approach, emphasizing teachers' role in developing the curriculum through collaborative efforts and the importance of student input. Taba's model is more iterative, involving continuous revision based on feedback, while Tyler's is more linear and structured.