Dialogue, Conversations and the Teaching Channel
155 Videos addressing such topics as
Strategies for Student Centered Discussion: Grades 9-12, ELA, 7 Minutes
https://www.teachingchannel.org/videos/strategies-for-student-centered-discussion
And here are a few other titles:
Facilitating Academic Discourse: Grade 8, Science, 9 Minutes
Popcorn Share: Generating Rapid Fire Ideas: All Grades, 2 Minutes
The Wingman: Engaging Reluctant Students: 2 Minutes
Improving Participation with Talk Moves: 2 Minutes
Student Engagement in the Language Arts: Grade 7, 14 Minutes