The resources attached to this post are linked to teaching the time in Spanish to beginners. In slides 22 + 59 there are links to some great websites where you can get some interactive practice taking place. In the PowerPoint I have also taken a look at the teaching of the 24 hour clock and I have also added in some cultural elements such as Nochevieja in Madrid. On slides 67-78 students come to the board + write on the times on the clock face of the Reloj de la Puerta del Sol (Interactive Whiteboard required). There is also reference made to Spanish TV stations in order to add some practice of the 24 hour clock.
[You can get a free worksheet on time from the Mary Glasgow website if you click HERE]