This document discusses the major foundations of curriculum development: philosophical, historical, psychological, and social. The philosophical foundations include perennialism, essentialism, progressivism, and reconstructionism. The historical foundations outline the theories of educators like Franklin Bobbitt, Werrett Charter, William Kilpatrick, and Ralph Tyler. The psychological foundations cover behaviorsit, cognitive, and humanistic perspectives. Finally, the social foundation recognizes that society shapes schools and curricula must address cultural diversity.