Keçeli kalemle beyaz tahtaya bakan bir erkek konuşmacı. Gözlüklü hoca beyaz tahtada duruyor ve elinde kalem var.. - Stok Fotoğraf ve Görsel

Teacher standing at whiteboard in lecture hall. Male lecturer with formal clothes holding marker and explaining in front of a whiteboard.

Elegant male speaker showing presentation on whiteboard. Portrait of a male lecturer pointing at whiteboard and coaching.

Young lecturer standing in front of the whiteboard. Teacher pointing at empty white board and holding marker in lecture hall.

Presenter standing in front of a blank paper whiteboard. Male lecturer with glasses pointing at flip chart board in the office.

Professional young man pointing at whiteboard and holding marker. Young lecturer standing in front of the whiteboard and explaining lecture.

Office guy reading document and touching his chin. Young man wearing glasses reading lecture and touching his head while standing in lecture hall.