This site connects a classroom teacher and/or school librarian with a real, live, and qualified scientist who will help support student inquiry and process as well as provide qualified information about specific topics within science.
International Digital Human Library
Requires signing up for a free account. This is a non-profit organization. Once you sign up, then you can search for a topic area (Experts) or for a fellow grade level classroom teacher for collaboration opportunities.
Units of Study through Videoconferencing (Free)
The Center for Interactive Learning and Collaboration (CILC), established in 1994 as a nonprofit, specializes in the access to applications and the utilization of video conferencing for live interactive content and professional development, as well as web based collaborative learning environments for K-20 education.
Videoconference around the world!