Power Points creats per l'alumnat de l'activitat 2.5

http://docs.google.com/present/edit?id=0AdTcYwfLID7vZGhqY2Y2cF8xZHhjczN2ZmQ&hl=ca

http://docs.google.com/present/edit?id=0AdTcYwfLID7vZGhqY2Y2cF8xM3E0cGN2OWhz&hl=ca

http://docs.google.com/present/edit?id=0AdTcYwfLID7vZGhqY2Y2cF83aGJtOXdzZmg&hl=ca