Imagen y sonido

https://docs.google.com/presentation/d/1L3LZ79HxrTsmYUpowLs2kgVTUtmKgyuXlTkdbMWu2vo/edit?usp=sharing

https://drive.google.com/file/d/0B44zlHP5EwfJRlhnd191Qjk2QVpzT1BhcnY3QldDbllET1dr/view?usp=sharing

https://docs.google.com/presentation/d/1l61H7GPF81Lta8kVnm0kSwFnp0AtYq6jUiN-KlHpgvg/edit?usp=sharing

https://docs.google.com/presentation/d/1QwxYSFxkSQ9em3zqBsNQiBlJKcJNoSJL9gfW81RtfX8/edit?usp=sharing