iEarn is a global project that connect students and teachers through a variety of projects that cover a spectrum of the curriculum.  One of the chief goals is to allow communication and development of understanding of other cultures.

This is a classroom teacher's blog that she and students contribute to throughout the year.  This is an example of making the work students do more authentic by giving them a real audience in the world.

Provides a space for students to gather to learn and to "think publicly" about Biology.

As the name implies, this Twitter account allows students to ask questions and receive answers via Twitter.

Livebinder from Classroom 2.0 Session on Inquiry Learning

This gives the Department of Education's take on communities of practice.  It describes their efforts and projects that support this form of learning in educational settings.  Links to these projects are provided.

This Pinterest page is more of a menu of materials associated with Personal Learning Networks.  Numerous links to PLN resources are provided.

A brief but excellent look at the need for PLN in school.  Give a good description of why teacher's need to be involved as students develop their existing PLN's and why they need to develop their own.

This blog post is an attempt to discover the definition of a Personal Learning Network as compared to Personal Learning Environment.  Ironically, the author uses his PLN to help determine the definition. Great example of a PLN in action.

YouTube video giving great reasons for the PLN, the role of the PLN and an overview of one person's PLN.  Gives one a pretty good understanding of the 'why' and 'how' of Personal Learning Networks.

An article detailing the history and development of Connectivism as a learning theory.  Goes on to question whether or not it should be considered a learning theory in it's own right.