Project Based Learning - there are many views on this subject. This post provides a great diagram that helps to see the continua that one may consider when designing PBL. It looks at six issues: Trust (locus of control), Questioning, Collaboration, Content, Knowledge and Purpose.
For example, with Trust the continua moves from teacher directed to student directed. Based on the project you may find that the location varies.
A short description is provided for each of the six issues that you may want to consider as are additional resources.
Via Beth Dichter