In my development psych class, we were covering early childhood and the importance of play for children to learn and grow. My prof played a very informative video for us that I thought I'd share:
[video=youtube;oiDV6uOY9QI]http://www.youtube.com/watch?v=oiDV6uOY9QI[/video]
[video=youtube;oiDV6uOY9QI]http://www.youtube.com/watch?v=oiDV6uOY9QI[/video]