The document introduces the virtual classroom as a synchronous computer-mediated learning environment where an instructor and participants interact in real-time from different locations. It discusses key features of virtual classrooms like visual displays, participant interactions through polling and chat, and communication tools. The document also compares synchronous e-learning, like virtual classrooms, to asynchronous e-learning, and outlines advantages and disadvantages of each. It concludes by discussing instructional components and learning processes that are best supported in the virtual classroom environment.