ACTIVIDAD N 15

http://youtu.be/VweCQigEBRw

ACTIVIDAD Nº 14

https://docs.google.com/spreadsheet/ccc?key=0AqAaNKJh28A4dFh2LXBkeEk2aE1CSDdBSDZvSngybEE&usp=sharing

ACTIVIDAD 13

https://docs.google.com/spreadsheet/ccc?key=0AqAaNKJh28A4dE9Fc0JWeWRMaVgtaHgxcWVhN0RoVlE&usp=sharing