This document contains summaries of two articles about virtual classrooms for education:
1) The first article discusses how virtual classrooms can be used in online learning environments to provide synchronous content like simultaneous events, online conversations and presentations. It notes various tools available for communication, sharing, and evaluation in virtual classrooms.
2) The second article outlines general requirements for effective virtual classroom tools, including integration with learning management systems, streaming and recording capabilities, breakout rooms, desktop sharing, file sharing, whiteboards, and instant messaging. It states that flexibility is often touted as the main advantage but tools must also substitute for a standard classroom.