The document discusses using simulations in mathematics education. It begins by defining instructional simulations and how they can bridge the gap between classroom and real-world learning. It then provides examples of simulations used in different disciplines like economics and various types of simulations from simple to complex. The document emphasizes that simulations can engage students in deep learning and understanding over simple memorization. It also provides guidance on how to effectively teach with simulations, including instructor preparation, active student participation, and post-simulation discussion.