What is it?
It's dynamic and interactive. It has impacted our culture and the digital generation hugely. It allows interaction on many levels. It conveys ideas and receives feedback. Television and radio were there to absorbed. But Web 2.0 is not just about consumption, it is about contribution.

Google apps, including Google Docs, include a powerful suite of tools for educators. They also embody a lot of what Web 2.0 is about. For a simple explanation, check out the video below.

If you want to know some of the many Web 2.0 tools out there, check out this summary slideshow of various tools.