The document describes four models of curriculum development:
1. The Hilda Taba model involves 8 steps beginning with identifying student needs and ending with evaluating to ensure mastery.
2. The Tyler model has four principles: determining education purposes, selecting learning experiences, organizing experiences effectively, and evaluating if purposes are met.
3. The Saylor, Alexander, and Lewis model starts with setting goals and objectives in four domains, then planning learning opportunities and implementation.
4. The Oliva model is simple, comprehensive, and systematic, involving 12 or 17 specific steps from specifying needs to curriculum evaluation.