Texts through time scrapbook/journal: You should gather 3-5 very different sources covering different time periods or contexts. E.g. an instagram post and a Victorian Era poster.
You should then annotate what they notice about the language uses in the source, linking to intended purpose and audience. Then you should be prepared to present your ideas on similarities and differences to the class.
You need to be prepared to present your findings during a lesson in the first week of year 12