Tyler rationale has dominated the curriculum world since it was published in 1949. It has been a continuous source of inspiration for the development and delivery of curriculum. The rationale is based on a simple and elegant description model that relates the relationship between curriculum, instruction and evaluation.
The Tyler model expresses the basic principle and instruction in four steps or process. The four steps include making decision on the purpose of education and the objectives of schooling, selection of the appropriate learning experience, organization of the learning experiences for effective instruction, and evaluation of the learning experiences (Tyler, 1949).