Censorhip V. Codeswitching Question

In regard to AAVE how do you teach something that is always changing?

this question is one that really intregues me because in several of the articles that i have read over the past week have discussed using aave as a tool to teach but i dont really understand how. From the time i have been listening to music hip hop has always been one of my favorites. and over the years new vocabulary is always being added and old vocabulary is not necissarily done away with but put into storage and everyonce in a while some artist will go up to that attic and see what treasures they can find. in regard to the aave in the classroom i think it is important for students to be able to distiguish between their primary discourse and the dominant discourse. Many students know how to code switch but dont really understand why or they think that their home or primary discourse, for one reason or another, is flawed creating the reason for them not to use it. It is also interesting to think about how aave gets filtered throughout the country. once a particular type of vocabulary has been spreed throughout the country