Today I had a rather not-so-good experience. An experience that made me doubt myself.
In the afternoon, after my classes, a fellow graduate student from East Asia approached me and asked for help for the homework that was due a week ago. Apparently, he was having some problems in solving them so the professor gave him an extension for the submission.
So I gladly did help him. I tried my best to explain what the concepts are and what they meant. But still he had a hard time understanding the concepts. I had to repeat what I was saying, and embarassingly enough, another graduate student came in and said that my voice could be heard as far as the elevator, that I was yelling at him.
Is it the language barrier? Is it because he is not so proficient in English? Or is it that I am not so good in expressing my thoughts? The episode just drained me that I discreetly told him that I needed to be somewhere after six (thus shortening the encounter to last just one hour). He even asked where I would be after my appointment (because he thought that I am meeting someone at six). So I frankly told him that I need to study for my own as well.
I feel like I was rude. I also have this sense that I am not an effective teacher. If I cannot handle a single person like him, then how would I be able to teach?