Although visual aids are widely considered a valuable source of scaffolding, the nature and active utilization of these aids in current science classrooms are not well understood. This qualitative study explores interaction in the teaching of concepts related to evolution, with a specific focus on a teacher's use of different visual support…

This paper addressed the under-investigated question whether speech act moves can be identified and classified in conversation by examining the content, positioning, and strategic role of utterances in turns and turn sequences. To this end, offering exchanges were analysed in the transcripts of 31 open role-plays. These were elicited from American…

The present study examines the influence of social distance and power factors on the use of internal and external mitigating devices and strategies in the production of requests by Korean learners of Russian. The data was collected by using a Discourse Completion Task (DCT) containing twelve situations that varied in the facts of power and social…