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.
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.
Learn from a HS in Texas that has fully committed to PBL teaching methods. Read, watch, and listen as teachers and students share their experience and successes with PBL.
I used this resource frequently when teaching PBL focused Technology to K-5th. It has many great resources including innovative digital tools, project ideas, etc. and search functions, by content area, by project type, etc. I often referred to it when needing to come up with a new project or tool to execute a project.