Relinquishing control over the classroom is the biggest challenge we face as educators. Most teachers love hearing their own voice. As people trained in repeating the same thing patiently, we can pontificate for hours with complete disregard for the level of our listeners' interest.
However, research in methodology of teaching overwhelmingly agrees that teacher-centered learning is a lot less effective than student-centered learning. In a big lecture classroom, it is counter-productive for the instructor to speak without interruption for more than 70 % of class time. In language learning, the class becomes a lot less effective if the teacher speaks for more than 5 % of class time. I usually aim at keeping my talking to under 3 % of the entire time the class lasts.
It took me a long time to learn to relinquish control and curtail my cherished speaking time. Blogging provides a great outlet where I can channel all of the frustration of not blabbing in an uninterrupted fashion during the classes I teach. I wish more educators realized that shutting up from time to time and letting the students participate more would be the most productive thing they can do as teachers.
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