Current Teaching:
Math 221b: Topology II - Course website on Moodle.

Past Teaching:
At Brandeis:
Fall 2025
Math 271b: Topology IV, Topics in Topology: The coarse geometry of huge groups.  Course website on Moodle

Fall 2024
Math 271a: Topology III - The geometry and topology of 3-manifolds.  Course website on LATTE

Fall 2023
Math 221a: Topology I - Course website on LATTE
Math 271b: Topology IV, Topics in Topology: Mapping class groups

Spring 2023
Math 221b: Topology II - Course website on LATTE

Fall 2022
Math 15a: Applied Linear Algebra - Course website is on LATTE
Math 221a: Topology I - Course website is on LATTE

Fall 2021
Math 104a: Introduction to Topology - Course website is on LATTE 
Math 221b: Topology IV, Topics in Topology: Hyperbolic groups - Click here for the course website

At Columbia:
Math UN1201(Fall 2020) - The main website for the course is Courseworks.  You will need to log in with your UNI in order to access the course content.
Math UN1201 (Spring 2020) - Click here for the course website

At UC Berkeley:
Math 113 (Spring 2018) - Click here for the course website.
Math H54 (Fall 2017) - Click here for the course website.
​Math 113 (Fall 2017) - Click here for the course website.

At UW Madison:
Math 222 (Fall 2015) - Click here for course website.
Math 234 (Spring 2015) - Click here for course website.
Math 234 (Fall 2014) - Click here for course website.
Math 132 (Spring 2013-Spring 2014)
Math 221 (Fall 2012)