For many years Martin Gardner wrote a column for Scientific American where he posed and solved puzzles from a diverse range of mathematical fields. In this course, we will explore the world of mathematics by looking at some of his puzzles. The puzzles will focus on a variety of topics such as combinatorics, probability, topology, geometry, logic, and scheduling. A week prior to each class, students will be presented with a set of puzzles. During the next class session, we will discuss the puzzles, how to solve them, and how one might extend them. Lecture (plus questions). Facilitated Discussion.