Classroom Earth a social network for environmental education created in partnership between the Weather Channel and the National Environmental Education Foundation, submitted by an NEA Today reader

Exploratorium® the multimedia Web site of a San Francisco museum of science, art and human perception, with professional development opportunities for science teachers

HowStuffWorks easy-to-understand, multimedia explanations of how the world works

Middle School Portal 2 a social networking site for middle school math and science teachers

NSTA Blog a blog from the National Science Teachers Association

Seven Skills of Highly Effective Web2 Science Teachers a SlideShare presentation about developing scientific literacy using Web 2.0 tools

100 Best Websites for Science Teachers