The document discusses blended and online learning environments. It provides an overview of Tennessee's e 4 TN program, which offers online courses for teachers to develop. Blended learning combines online and face-to-face instruction, allowing flexibility while engaging students. Effective blended learning meets unique student needs through the use of online and digital tools, resources, and curricula. The document also discusses best practices for teaching online, including using graphics, videos, links and interactive tools to engage 21st century students.