Approaches to standards, curriculum development, and pedagogy are remarkably diverse; however, recent years have seen a growing movement to base each of these on learning trajectories. In this paper, I discuss and compare the various terms and conceptions of this construct, present our definition, differentiate between our conception and that of…

Examined the applicability of Sternberg's componential theory of intellectual functioning to young children's thinking and the validity of an observational approach to the measurement of metacomponential processing using elementary school children subjects (N=40). Results indicated that both reliability and construct validity of the observational…

This article describes how children build increasingly abstract knowledge of linear measurement, emphasizing ways they relate space and number. Assessments indicate children struggle to understand measurement, especially concepts related to complex paths as in perimeter tasks. This article draws on developmental accounts of children's knowledge of…