The document summarizes a conference called "The 21st Century Teacher: Best Practices" that will take place in Maracaibo, Zulia State, Venezuela from November 30th to December 1st, 2013. It discusses the topics of knowledge, skills, and attitude that teachers should focus on. It also provides an overview of virtual learning environments (VLEs) like Moodle, Edmodo, Schoology, and OpenClass that can be used for online course delivery, management, and tracking. Key features of VLEs include assignments, discussions, blogs, projects, resources, and social networking interfaces.