Simulation has always been about learning. For being able to simulate something, a model of a system must be developed. Thus, the perspective of teaching and training with modeling and simulation is necessarily twofold. Sometimes the model builders are the primary learners. They learn by constructing models of scratch, and by changing model parameters. Sometimes the users of the simulation models are the target learners. They learn by interacting with a simulation. Sometimes, the learners are not aware that they interact with a simulation.

The terms modeling and simulation are analyzed in this article. A categorization of simulation systems for teaching and training is described.

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