Work backward from a topic.
Use your standards.
Find projects and ideas on the Web.
Map your community.
Match what people do in their daily work.
Tie projects to local and national events.
Focus on community service.

Visit PBL-Online Partner, George Lucas Educational Foundation (GLEF), to learn more about these projects:
Bugscope:Magnifying the Connection Between Students, Science, and Scientists
Geo-Literacy: Forging New Ground
New Technologies Link Ancient Cultures
Geometry in the Real World-Students as Architects
Students Make a Business of Learning