Task 3 Data Representation : Option 2,

Option 2: Describe a classroom activity that involves students encoding and decoding data. You might involve another system that is used to convey information (e.g. Braille, flag systems, sign language, other cultures) or  incorporate a resource (e.g. story, song). 

I would get my class to pretend they are a captain of a ship trying to talk to another captain of a ship using flags. I would print off the International maritime signal flags and they would use this as a cheat sheet to decipher what each flag means. I would use the flags to write a message like (pirates are on the horizon) and get the the ‘captains’ to translate the message and pass it on to other ships that they encounter.

International Code of Signals - Wikipedia

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