This is a cultural lesson to really just enjoy. Some ideas to spice up the tutorial are: wear a big hat with a feathery plume, use a pirate accent for the rest of the day, play pirate music in the background while going through the slide show presentation. International Talk Like a Pirate Day is the perfect time to consider the development of dialects and how those dialects may shape our perception's of other people.
A three minute clip that gives a brief overview of how dialects are formed.
Source: Discovery News. Talk Like a Pirate:How Dialects are Formed. Youtube. Sept. 19, 2013.