I had been teaching MAT397 Calculus III (Multivariable Calculus) when I was a Philip T. Church Postdoctoral Fellow at Syracuse University from 2016 to 2018. When I was a teaching assistant at The University of Hong Kong from 2013 to 2016, I also taught tutorials for courses including Introduction to Differentiable Manifolds, Multivariable Calculus, Differential Equations, and Basic Calculus / Basic Applicable Mathematics / University Mathematics I.