A new website has recently been published with 3.0 teacher resources. Unlike 2.0 resources (e.g., web 2.0, classroom 2.0, etc.), 3.0 implies some screening of user-produced content to come up with something that’s decent quality based on a systematic and rigorous review.
I browsed the website and was pleasantly surprised to find good quality content, easily searchable and well-sorted out.
Definitely worth bookmarking: http://www.teachersfirst.com