Review the map with students and ask open ended questions:
Why do you think Dialects are varied in diffrent areas?
How do various dialects move throught the counrty?
What benifiet would you have for understanding various dialects and the people who use them?
How do you think others see your way of speaking? How do you think you see others who speak diffrently?
Explore how dialects are diffrent, use set of sentences from other dialects(possible recording of speech) to demonstrate pace, syntex and usage of various wording.
Decode sentences into what would be said in your regional dialect and compare.