Sound recording with a primary sound of my professor Jankowski lecturing calculus 2. Also included are secondary sounds of creaking desks when students move, and the soft conversation of people sitting next to me. Recorded on an Iphone 6s.
Sound recording of a math review session in a classroom at Georgia Tech. The TA wrote on the whiteboard, answered a student's question, and erased the whiteboard. Recorded with Moto Z recorder.