This document discusses concepts and definitions of curriculum from both traditional and modern perspectives. It provides several definitions of curriculum from different authors, focusing on curriculum as a structured set of learning outcomes or tasks. The document also discusses curriculum planning, development, and innovation. It outlines factors to consider in curriculum development like the nature of society and needs of learners. Finally, it discusses two predominant schools of thought on curriculum development - the essentialist school which views curriculum as rigid disciplines, and the progressive school which sees curriculum as flexible and learner-centered.