Wbere to Begin. Disagreements over the process of sequencing center on whether curriculum planners should start with learners or subject matter. The first demands choosing emphases in keeping with the learners' actual growth and development, or, when learning experiences are, in current terminology, "developmentally appropriate"; the second, placing subject matter at the grade level at which it is assumed learners will be able to master it. The latter approach to sequencing has been the historic approach.