Analyze your performance by recording and reflecting
I took a speech class one semester when I was in undergraduate school. For our first assignment we had to give a short speech that the teacher videotaped. Our extended assignment was to watch the recording and critique our performance. That proved to be a very eye-opening experience for me. If you had asked me how I did right after I gave my speech I would have told you I was pleased with my delivery. When I watched the recording, however, I realized I had said “um” consistently throughout. It became quite clear to me that when I was publicly speaking I was not completely aware of everything I was doing.
Source: Record Yourself to Improve Your Practice | Edutopia
Athletes do it, teachers in Ohio going through Resident Educator do it, why shouldn’t we all record our classes? This article has some great questions for you to answer as you reflect on your classroom recordings.