This workshop will lay the foundation for effective development of large system dynamic modeling projects using Vensim. A key to this development process is the automated combining (merging) of models. Even small system dynamics models can be fairly complex. When the size of the model gets large, such models often become unwieldy, difficult to maintain, and hard to understand by any but the original modeler involved in the development. This workshop will provide specific methods in standardization to alleviate these issues and apply concepts from modern software development practices to system dynamics modeling. Participants will learn techniques for modularization, normalization, and the application of automation tools. While much of the workshop is specific to Vensim, many of the concepts are generic and can be applied to any system dynamics simulation environments.