The Jigsaw Classroom
http://www.jigsaw.org
Developed by Elliot Aronson and the Social Psychology Network, this site contains "how-to" explanations, research summaries, implementation tips, and related links.

The Cooperative Learning Network
http://www.sheridanc.on.ca/coop_lrn.htm
Sponsored by Sheridan College, this site contains descriptions of cooperative learning in postsecondary schools, online discussions, professional development opportunities, and related links.

The Cooperative Learning Center (CLC) at the University of Minnesota
http://www.cooplearn.org
Provided by the CLC, this site contains descriptions of center work, essays and research reports by Johnson and Johnson and others, book and supply catalogues.

Cooperative Learning Site of the California Department of Education (CDE)
http://www.cde.ca.gov/iasa/cooplrng2.html
Developed by the CDE, this site focuses on promoting the academic success of diverse learners, especially those from low income or minority language backgrounds. It contains descriptions of key elements and applications that stimulate growth in language proficiency.

Cooperative Learning Site in the "Tool Room" of New Horizons for Learning
http://www.newhorizons.org/trm_cooplrn.html
This site contains brief descriptions of the basic features of cooperative learning and links to related sites.