Recent years have seen substantial improvements in the teaching of reading and early arithmetic based on rigorous analysis of the component learning skills involved in these areas and of the ways they are developed. Despite the importance attached to science, there has been very little comparable work that might provide a steer to primary school…

Common approaches to ordering the curriculum content of a scholastic discipline include a hierarchical structuring of the discipline's major concepts and a view of inquiry as learners solving problems. Other approaches include logical prerequisite, concept inclusion, generalization, concept interrelationship, chronology, and subject matter.…