Powerful Learning Practice is a site that provides professional development and resources for teachers to implement new technologies and pedagogy to create "21st Century Classrooms." There are some good resources on the site.
They have an article entitled "A Day in the Life of a Connected Educator – Using social media in 21st century classrooms" that looks at how teachers use social media and other Web 2.0 tools to improve teaching and learning.
The infographic is interesting and has ideas for using social media in the classroom. It follows a teacher through her day as she uses social media sites and Web 2.0 resources throughout her day as an educator. Teachers can get some great ideas from this for their own use.
It can be found at their site:
Social Media in Education - connect, share, learn, communicate and more
Twitter, Google Plus, and Facebook - a nice comparison
Which Social Network should you use? Infographic on which to use when.