This document discusses blended learning in the 21st century. It defines blended learning as a formal education program that combines online and in-person learning, allowing students some control over the pace and place of learning. The document outlines several models of blended learning and their characteristics. It also discusses the benefits of blended learning, such as increased student engagement and access to resources. Blended learning helps improve student learning outcomes and teaching experiences by effectively integrating technology into course design.