Been for Education is one of my new favorite Web 2.0 sites for collaborative browsing and bookmarking the web in a safe environment. The way this works is educators create, manage, and monitor the student accounts while the "guide" learning by browsing the web and collaborating in real-time. This is all done through an easy to use interface and browser extension and is ideal for researching/introducing a topic, guided learning, and much much more.
I highly recommend checking out Been for Education by clicking here!!!
*Been is an advertiser of Technology Tidbits.