Here are some useful additions to The Best Sites For Cooperative Learning Ideas:
Personalized PBL: Student-Designed Learning is by Andrew Miller.
Five Keys to Rigorous Project-Based Learning is from Edutopia.
What Project-Based Learning Means for Your High School Child is from US News.
A World of Project Ideas (You Can Steal) is by Suzie Boss.
— suzieboss (@suzieboss) July 1, 2014