The document discusses the philosophical foundations of curriculum and identifies four major philosophies that have influenced US education: idealism, realism, pragmatism, and existentialism. It also describes four philosophies of education that differ and have influenced education over time: perennialism, essentialism, progressivism, and reconstructionism. The reflections at the end discuss how educators' philosophies can change over time and influence the curriculums they teach, and recognize the importance of being understanding of different philosophies while also maintaining one's own ideals.