Simulation involves recreating real-life situations for educational purposes. It allows learners to gain skills and behaviors in a risk-free environment similar to real situations. Simulation is defined as accurately representing realistic situations through role-playing exercises where students simulate classroom environments. It has advantages like testing behaviors, analyzing systems, avoiding expensive trial-and-error, and being risk-free. However, simulations can be expensive, data interpretation difficult, and take a long time. Simulation software helps recreate systems through animation and modeling to benefit students.