This document discusses blended learning, which combines online learning with traditional in-person learning. It defines blended learning as a formal education program where students learn at least partly through online means, while maintaining some control over aspects like time, location, pace, and path of their learning. The document notes that blended learning grew out of online learning programs initially used as a last resort or for individual study, but was improved by incorporating in-person experiences to support online learning. It describes various models of blended learning, noting that many programs combine multiple models to create hybrid approaches tailored to different student populations, subjects, and environments.