The creation of a well-functioning sequence, for example, is a continuing prob- lem for the curriculum developer. At the same time, the curriculum planner must understand the concept of sequencing, which is essential to an effective curriculum. Bringing the two elements, curriculum and sequencing, together we formulate the prin- ciple: An effective curriculum is one that is properly sequenced. We will, therefore, refer to these eight guiding factors as problems, concepts, or, by inference, principles. All eight concepts are interrelated. We shall first examine four concepts closely re- lated to each other: scope, relevance, balance, and integration. The last three are dimen- sions of scope; all four relate to the choice of goals and objectives.