Pronunciation is an essential part of learning a language.
Not always easy to know if you are pronouncing correctly and if you can be understood.
For help with pronunciation, there are tools available on-line :
Isolated words : http://www.howjsay.com/
Full sentences / texts : http://www.oddcast.com/home/demos/tts/tts_example.php?sitepal
With the new technology introduced by SIRI on iPads and other equivalents, it is becoming easier and easier to have precise oral models to work on. This can be precious for the teacher when (s)he is preparing.
For more extensive ideas on teaching pronunciation skills, I invite you to explore my sister site – Funology – which accompanies my training course on teaching phonology practices in the classroom. http://phonologyfun.wordpress.com/