I am currently not teaching anything. Though, I am supervising a few students at the University of Warwick, I have no teaching responsibilities here.
In fall 2016, I taught Math 100 (second semester calculus, starting with integration by parts and going through sequences and series) at Brown University. Here are my concluding remarks.
In spring 2016, I designed and taught Math 42 (elementary number theory) at Brown University. My students were exceptional — check out a showcase of some of their final projects. Here are my concluding remarks.
In fall 2014, I taught Math 170 (advanced placement second semester calculus) at Brown University.
I taught number theory in the Summer@Brown program for high school students in the summers of 2013-2015.
I taught a privately requested course in precalculus in the summer of 2013.
I have served as a TA (many, many, many times) for
- Math 90 (first semester calculus) at Brown University
- Math 100 (second semester calculus) at Brown University
- Math 1501 (first semester calculus) at Georgia Tech
- Math 1502 (second semester calculus, starting with sequences and series but also with 7 weeks of linear algebra) at Georgia Tech
- Math 2401 (multivariable calculus) at Georgia Tech (there’s essentially no content on this site about this – this was just before I began to maintain a website)
I sometimes tutor at Brown (but not limited to Brown students) and around Boston, on a wide variety of topics (not just the ordinary, boring ones). I charge $80/hour, but I am not currently looking for tutees.
Below, you can find my most recent posts tagged under “Teaching”.
David Lowry-Duda October 17, 2019 at 3:17 pm on Notes from a talk at the Maine-Quebec Number Theory ConferenceThanks Peter! You're right --- and it's a nice reference. 
Peter Humphries October 7, 2019 at 4:03 am on Notes from a talk at the Maine-Quebec Number Theory ConferenceOmega results of this form using this method are presented quite nicely in Chapter 15 of Montgomery and Vaughan; they give applications towards sign changes of the Chebyshev psi function and of partial sums of the Mobius function. 
David Lowry-Duda June 16, 2019 at 1:55 am on Choosing functions and generating figures for “When are there continuous choices for the mean value abscissa?”At first, we chose 2 because it was the other "obvious" point that we hadn't yet specified. We already controlled the values at 0, 1, and 3. But I later realized it doesn't matter what point we choose. What we're really doing is adding one extra degree of freedom and using it to minimize the L2 norm of the derivative ---
PC June 16, 2019 at 1:14 am on Choosing functions and generating figures for “When are there continuous choices for the mean value abscissa?”Why did you choose 2 for the pt in the L2 part? What if you chose 1.5 or something? 
Donna ebert September 27, 2018 at 3:55 pm on AboutI appreciate your taking the time to reply. The version of FreeCell I play online does count taking a card from the tableau (and the Freecells) as a move when adding them to the foundation. I never realized others did not. 
Luis Alberto Torres Cruz September 23, 2018 at 9:50 am on An intuitive introduction to calculusGreat post! Thank you for taking the time to write this. Regarding the example on population growth, you state that if P'(t) = k*P(t), then P(t) = ae^(kt). But wouldn't a more general expression be: P(t) = ae^(kt+C1), where C1 is a constant?