This book contains an introduction to hyperbolic partial differential equations and a powerful class of numerical methods for approximating their solution, including both Iinear problems and nonlinear conservation laws. These equations describe a wide range of wavepropagation and transport phenomena arising in nearly every scientific and engineering discipline. Several applications are described in a self-contained manner, along with much of the mathematical theory of hyperbolic problems. High-resolution versions of Godunov's method are developed, in which Riemann problems are solved to determine the local wavestructure and limiters are then applied to eliminate numerical oscillations. These methods were originally designed to capture shock waves accurately, but are also useful tools for studying linear wave-propagation problems, particularly in heterogenous material. The methods studied are implemented in the CLAWPACK software package. Source code for all the examples presented can be found on the web, along with animations of many timedependent solutions. This provides an excellent leaning environment for understanding wave-propagation phenomena and finite volume methods.Randall LeVeque is the Boeing Professor of Applied Mathematics at the University of Washington.