I was a TA and instructor for the PSU math dept. from 1996 to 2003. I have been tutoring for college math courses for 15 years. I have the most experience with calculus and differential equations, but I am willing to assist with other material. I favor a mostly problem-oriented approach (concentrating on hw problems, quiz and exam problems, etc.), but I am also willing to re-explain material in a "lecture" style if the student wishes to review classwork.