The aim of this article is to provide a critical review of the theories and the model used in the field of geometry education research. The article critically discusses van Hiele's theory, Fischbein's theory of figural concepts, Duval's theory of figural apprehension, the Spatial Operational Capacity (SOC) model by Wessels and van Niekerk, and the…

With U.S. classrooms increasingly characterized by linguistic diversity, policies mandating teacher training around English learning have proliferated. Recent federal oversight prompted Massachusetts to implement an initiative to endorse its 70,000+ teachers in Sheltered English Immersion (SEI). While policy research has productively emphasized…

This paper investigates the frequency and contextual uses of the metadiscoursal devices of evidentials, code glosses, hedges and boosters in four academic disciplines, namely, linguistics, literature, chemistry and medicine. Hyland and Hinkel's taxonomies of metadiscourse provided the search items. The data analyzed consisted of a corpus of forty…

Decades of research have identified features of classrooms and teachers' talk that are associated with children's language growth. Unfortunately, much of this work has not yet translated to widespread practice in early childhood classrooms. Given the important contributions that early language development makes to later academic achievement,…