Expository
Quaternion Algebras and Their Orders (lectures by Pete L. Clark and Kate Thompson)
75-minute Intro to Number Theory: One Theorem, Three Proofs (undergrad friendly)
Introduction to Continued Fractions and Pell's Equation (undergrad friendly)
Introduction to Modular Symbols (notes for talk in UGA Student Number Theory Seminar)
Partitions and Eta Functions (notes for talk in UGA Modular Forms Final Seminar Series)