Article reports on #140edu conference on benefits of tweets and many educational uses of tweeting including collaboration.

At an educational technology conference in Boston July 27, Harvard University physics professor Eric Mazur explained how he uses "peer instruction" to help his students engage in deeper learning than traditional lectures can provide-and he unveiled a brand-new ed-tech service that can help educators take this concept to a whole new level.

Check out these seven video tips, made by Edutopia bloggers and contributors, on using technology in your classroom. Watch teachers, an administrator and consultant talk about real applications of media tools for students. Content for this project is licensed under a Creative Commons BY-NC-ND License.