I became an undergraduate teaching assistant of Electrical Engineering last year. Actually, I was very nervous, because it was my first time to get a job in campus. I was unfamiliar with everything about TA. However, I was fortunately. I had a good professor and working partners. They gave me a lot of help and I enjoyed this work so much. TA is a hard work. Not only you had to understand these knowledge, and also you needed to know how to explain these solutions to students. After being a TA, I know the importance of TA, and I hope I can continue to be a TA in future.