Statements that describe what learners should be able to master. A major aim is the acquisition of facts, concepts and principles. Developing instructional objectives involves learning the fundamentals and vocabulary of each discipline and developing a logical progression of concepts in each discipline. Resources and materials are more effectively deployed when instructional objectives are explicit. It is important to assure that objectives are measurable and that they delineate a specific level of competence. One can and should distinguish between knowledge, skill and attitude objectives.