Peer Math Tutoring


SUMO works with the Stanford math department to provide peer tutoring services for a number of introductory math classes, specifically MATH 19, 20, 21, 51, 52, 53, and 104. The peer tutors are available to answer any questions you have about the material and homework in these classes.

Peer tutoring hours are drop-in; just show up and our tutors will help you out. Feel free to come and work on your homework even if you don't have any specific questions. Many students work on their homework during tutoring, asking questions if they encounter difficulties.

Please note that this program is not aimed towards Math 60CM/DM students. For students in higher level math classes, the math department offers other resources.

Becoming a Tutor

If you are interested in becoming a peer math tutor, we hire new tutors at the start of Fall, Winter, and Spring Quarter of each academic year (if there are available positions). Tutors should be able to help students with either all three classes of the MATH 19/20/21 series and MATH 51, all three classes of the MATH 50s series, or MATH 104/113.

Tutoring position announcements are sent to the SUMO mailing list. If you do not want to subscribe to the SUMO mailing list but would like to receive tutoring announcements, or if you have any questions, please e-mail Nitya Mani (nityam at


Starting the second week of each quarter, tutoring for the Math 50s series classes will occur Monday-Thursday from 6:00 PM to 10:00 PM in room 380-381T. Tutoring will continue through Dead Week but exclude university holidays.

Tutoring will focus on Math 51, 52, 53, and 104 on Mondays and Wednesdays. Tutoring will focus on Math 19, 20, and 21 on Tuesdays and Thursdays.


Another one of our tutors, Arun Debray, took lecture notes for Math 53. They can be found here.

If you have any questions about tutoring or applying to be a tutor, please contact Ben Heller. (benheller at

Zoom for Spring 2020

SUMO tutoring will occur over Zoom this quarter. The Zoom link can be found here.

Meet Our Tutors

Emily Wen

Emily Wen is an undergraduate interested in studying mathematics or computer science. She likes combinatoric problems and is excited to learn more about other math subfields. Aside from academics, Emily enjoys swimming.

Ben Heller

Ben Heller is a sophomore studying mathematics at Stanford. His mathematical interests are diverse, but he is particularly fond of logic and has done research in probability theory. Tutoring gives him the opportunity to help people understand interesting concepts and widen his perspective on the process of doing mathematics.

Mac Bagwell

Mac Bagwell is an undergraduate studying mathematics at Stanford. His strongest mathematical interests include analytical number theory and combinatorics. Outside of the classroom, he enjoys playing foosball and messing around on the piano in his dorm.

Adrian Liu

Adrian Liu is a junior studying Mathematics and Philosophy. He is still rather new to theoretical math, and is currently learning more about algebraic topology and complex analysis. He works as a tutor and a grader for the math department, and spends the rest of his free time playing classical piano-he's currently working on Brahms concerto no. 2.

Andy Chen

Andy Chen is a senior studying mathematics and computer science at Stanford University. He has run mathematical workshops at several educational programs such as Stanford Splash, and he currently researches combinatorics and graph theory. Outside of academics, Andy likes to climb rocks and photograph San Francisco.

Aaron Kaufer

Aaron Kaufer is an undergraduate studying mathematics at Stanford. His interests lie heavily in algebra (particularly algebraic number theory) and measure theory, and he hopes to go on to do research and write a senior honors thesis. He works as both a tutor and a grader, and he loves teaching others and helping fellow students understand tough concepts.

Nitya Mani

Nitya Mani is an undergraduate studying mathematics at Stanford University. She is excited about problems in algebraic number theory and extremal combinatorics and has done research in both areas. Some current areas she is learning more about include geometric measure theory and local class field theory. Nitya coordinates the student peer tutoring program for the Stanford mathematics department and has graded many Stanford math classes.

Brian Zeng

Brian Zeng is an undergraduate studying computer science at Stanford. He is particularly interested in machine learning applications and software development. Fun fact, he loves kit kats.