Hi there, my name is Arnold. I am a Phd student in UNSW doing a multi-disciplinary research (math, computer science, and medical science). I am from Indonesia, and I've been working as a teaching assistant at Pelita Harapan University for 1 year. I have a lots of experience as a math teacher. I've been a tutor since 2009. I am friendly, humorist, and can explain difficult math concept with various illustration and example. In fact, I love to motivate and help anyone who want to learn about math. Contact me for schedule confirmation.