All of the models discussed in the VanLehn paper would be useful for modeling zika virus. Depending on what I want the students to learn from the modeling experience changes which model would be the most beneficial. If I wanted the students to understand transmission dynamics I would have them build a model employing agent-based modeling. This would allow the students to grasp how diseases spread over time and through developing the model they would learn all the factors related to disease transmission. Developing a working model themselves would be significantly better than giving the students a model to alter. Once models were developed, each student could also present their model and students could benefit from seeing other ways to answer the same question. If I wanted students to understand cause/effect relationships, they could use the system dynamics model. The way this is explained in the text is a lot more math focused than I think would be useful for most students (especially in a middle school classroom). Diagraming the relationship between factors related to disease spread could definitely be beneficial, however, and would promote independent thought and concept mapping. I think the time spent teaching how to develop a model in this way is incredibly beneficial for students in the future and will promote students ability to connect concepts.