Cátedra: Lesson Plan and suplementary material

https://docs.google.com/open?id=0B-C8mhvLq2rsSXBkRmY3MDlPbzA
https://docs.google.com/open?id=0B-C8mhvLq2rsWm16dE9UdURmSVE
https://docs.google.com/open?id=0B-C8mhvLq2rsVUkteFZhV1JCWWc
https://docs.google.com/open?id=0B-C8mhvLq2rsakUtMXl4cjlsRXc
http://brainwavelab.blogspot.com/2008/02/la-magia-del-arroyo-80min.html