Classroom Talk 

Classroom Talk creates the space for students to articulate their thinking and strengthen their voices. Classroom Talk takes place in pairs, in Collaborative Group Work, and as a whole class. As students become accustomed to talking in class, the teacher serves as a facilitator to engage students in higher levels of discourse. Teachers introduce and reinforce the use of academic language and encourage students to use that language in their classrooms. 

(JFF's Common Instructional Framework, Six Strategies to Build College Readiness)