If this is done right it is a graet thing... I have worked in areas using this.. however the teacher was not holding them accountable for thier time and it became an opportunity to play around. Also it is best wtih middle school and above...BEST for Highschool... 

PBL this was the most impressive video I have seen and the children's wanting to make a difference in becoming "Magnificent Citizen!"

This is very informative.

This video emphasizes the project based learning approach. It seems to be very effective. 

This is a video about project based learning to help some individuals that are unfortunate, making students more sociable and gaining knowledge and college credits at the same time.