The document describes several linear models of curriculum development, including Ralph Tyler's model and Hilda Taba's model. Tyler's 4-step model involves identifying objectives from sources like students, society, and subjects. Taba's inductive 5-step model has teachers create teaching units and build to a general design. The Oliva model is a deductive 17-step process that allows a faculty to develop, implement, and evaluate a school's entire curriculum based on student and community needs.