The Project Approach site has information about PBL, many examples of projects (particularly for ES) and resources to help teachers design and implement their own projects.

130 Countries 30 Languages 40,000 Educators 2 Million Youth iEARN (International Education and Resource Network) is the world's largest non-profit global network that enables teachers and youth to use the Internet and other technologies to collaborate on projects that enhance learning and make a difference in the world.