This document contains two units that examine integral transforms and series expansions. In the first module, the user is expected to learn how to use the unified method presented to obtain Laplace transforms, Fourier transforms, complex Fourier series, real Fourier series, and half-range sine series for given piecewise continuous functions. In the second unit, the student is expected to use the method presented to find a function when given the Laplace transform, the Fourier transform, the coefficient transform, or the Fourier series expansion of a function. Each module contains exercises and a model exam. Answers to all questions are provided. (MP)