Fall 2012-Math 201 Elementary Number Theory

This was a “flipped” version of the LUC elementary number theory course that I ran in collaboration with Steve Doty. Lectures took the form of videos that the students could watch at their leisure. Class time was spent with students presenting proofs at the board or working problems in groups.

The material below is indebted to Kenneth Rosen’s Elementary number theory and its applications, which was the official text of the course. In particular, many of the exercises are versions of exercises appearing in this text. There are many points, however, where we give our own take on things, especially starting with congruences.


Steve and I took turns generating the material for course topics. You can figure out who did what topic by clicking on the video links.