We examined students' understanding of the causes of a scientific phenomenon from a multiple-document-inquiry unit. Students read several documents that each described causal factors that could be integrated to address the given writing task of explaining the causes of change in average global temperature. We manipulated whether the document set…

Recently, from the Vygotskyan socio-cultural perspective, second language (L2) researchers have paid growing attention to scaffolding and have argued that L2 learning is enhanced through experts' scaffolding. However, not much is known about how teacher gesture scaffolds L2 learners' writing and how teachers manipulate writing-oriented gestures…