This module teaches students how to obtain a model of dynamic system. Model plays an important role in various aspects of engineering. Prediction, feedback control, fault diagnosis, estimation, and system optimization are few examples of engineering application which require system model. At the end of the course, the students will have a good understanding of models of dynamic systems and the methods to find them. Major Topics: Physical modeling, Bond-graph technique, Parametric and Non-parametric models, Regression model, Identification experiment, Model validation. The module is intended for graduate students and engineers interested in identifying the mathematical model of a process or system.