I have been the Teaching Assistant (TA) for the following undergraduate courses at Northwestern University:
Fall 2023: Finite Mathematics (Instructor: Nicholas Ng)
Fall 2023: Group Theory (Instructor: Yuchen Liu)
Winter 2024: Ring Theory (Instructor: Yuchen Liu)
Winter 2024: Introduction to Number Theory (Instructor: Maria Nastasescu)
Spring 2024: Fields and Galois Theory (Instructor: Aaron Greicius)
Spring 2024: Second Course in Number Theory (Instructor: Maria Nastasescu)
Fall 2024: Analysis in Metric Spaces (Instructor: Jared Wunsch)
Fall 2024: Multivariable Differential & Integral Calculus for First Year ISP (Science) Students (Instructor: Cherry Ng)
Winter 2025: Second Course in Analysis (Instructor: Xiumin Du)
Winter 2025: Differential Equations for First Year ISP (Science) Students (Instructor: Cherry Ng)
Spring 2025: Lebesgue Measure Theory on the Real Line (Instructor: Keith Burns)
Spring 2025: Series and Multiple Integrals (Instructor: Irmak Balcik)
Winter 2026: Combinatorics (Instructor: Mina Nahvi)
Winter 2026: Complex Analysis (Instructor: Ezra Getzler)
Spring 2026: Second Course in Number Theory (Instructor: Aaron Greicius)
Spring 2026: Graduate Commutative Algebra (Instructor: Ananth Shankar)
Here are the Discussion Problems I created, with the help of Yuchen Liu and Aaron Greicius, when I was the TA for the Ring Theory and Galois Theory Courses in 2023.